Difference between revisions of "Timeline of influenza"

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The following are some interesting questions that can be answered by reading this timeline:  
 
The following are some interesting questions that can be answered by reading this timeline:  
  
* What are the several influenza vaccine recommendations issued by important organizations?
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* What are some notable outbreaks of influenza recorded throughout history?
** Sort the full timeline by "Event type" and look for the group of rows with value "Vaccine recommendation".
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** Sort the full timeline by "Event type" and look for the group of rows with value "{{w|Epidemic}}".
** You will see a number of recommendations, like those by {{w|WHO}} for both [[w:Northern hemisphere|Northern]] and [[w:Southern hemisphere|Southern]] hemispheres starting from 1998.
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** You will see oubreaks notable by their magnitude, like big epidemics and pandemics, or by the novelty of the {{w|influenza virus}} strain.
 
* What are some notable outbreaks affecting non-human animals?
 
* What are some notable outbreaks affecting non-human animals?
 
** Sort the full timeline by "Event type" and look for the group of rows with value "{{w|Epizootic}}".
 
** Sort the full timeline by "Event type" and look for the group of rows with value "{{w|Epizootic}}".
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** Sort the full timeline by "Event type" and look for the group of rows with value "Infection".
 
** Sort the full timeline by "Event type" and look for the group of rows with value "Infection".
 
** You will mainly see the emergence of a specific strain detected in individuals.
 
** You will mainly see the emergence of a specific strain detected in individuals.
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* What are some significant events describing research on influenza in the different fields of science?
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** Sort the full timeline by "Event type" and look for the group of rows with value "Research".
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** For research in {{w|virology}}, look for the group of rows with value "Research (virology)". The same can be applied for research in {{w|epidemiology}} and other fields, clarified between parentheses.
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* What are some significant events describing the medical development progress on treating and preventing influenza?
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** Sort the full timeline by "Event type" and look for the group of rows with value "Medical development".
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** For specific development of vaccines, look for the group of rows with value "Medical development (vaccine)".
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* What are the several influenza vaccine recommendations issued by important organizations?
 +
** Sort the full timeline by "Event type" and look for the group of rows with value "Vaccine recommendation".
 +
** You will see a number of recommendations, like those by {{w|WHO}} for both [[w:Northern hemisphere|Northern]] and [[w:Southern hemisphere|Southern]] hemispheres starting from 1998.
 
* What are some notable publications authored by experts and/or organizations concerning influenza?
 
* What are some notable publications authored by experts and/or organizations concerning influenza?
 
** Sort the full timeline by "Event type" and look for the group of rows with value "Publication".
 
** Sort the full timeline by "Event type" and look for the group of rows with value "Publication".
 
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** You will see publications about influenza in different fields, including virology and epidemiology, as well as numerous guidelines produced by the {{w|World Health Organization}}.
  
 
==Big Picture==
 
==Big Picture==
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! Year/period !! Key developments !! Details
 
! Year/period !! Key developments !! Details
 
|-
 
|-
| 400 [[wikipedia:Before Common Era|BCE]] onward || Post first description era || This period marks the existence of influenza since its first description by Greek physician [[wikipedia:Hippocrates|Hippocrates]].
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| 400 [[wikipedia:Before Common Era|BCE]] onward || Post first description era || This period marks the existence of influenza as a disease since its first description by Greek physician [[wikipedia:Hippocrates|Hippocrates]].
 
|-
 
|-
 
| 1510 onward || Post first pandemic description era || This period begins with the first recognition of pandemic influenza, giving birth to a five centuries period of documented influenza pandemics.  
 
| 1510 onward || Post first pandemic description era || This period begins with the first recognition of pandemic influenza, giving birth to a five centuries period of documented influenza pandemics.  
 
|-
 
|-
| 1930s onward || Modern medical development era || Period marking an accelerating time of scientific and medical development including the discovery of the influenza virus in both non-humans and humans, as well as the first influenza vaccine
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| 1930s onward || Modern medical development era || Period marking an accelerating time of scientific and medical development including the discovery of the influenza virus in both non-humans (1931) and humans (1933), as well as the first influenza vaccine (1936). After the end of {{w|World War II}}, international health organizations merge, and large scale vaccination campaigns begin.<ref name="Springer">{{cite book|title=Vaccine Analysis: Strategies, Principles, and Control|date=2014|publisher=Springer|isbn=9783662450246|page=61|url=https://books.google.ca/books?id=vJKeBQAAQBAJ&pg=PA61}}</ref>
 
|-
 
|-
|}
+
| 21th century || Present time || Today, worldwide accessible databases multiply in order to control outbreaks and prevent pandemics. New influenza strain outbreaks still occur. Efficacy of currently available vaccines is still insufficient to diminish the current annual health burden induced by the virus.<ref name="Springer"/>
 
 
{| class="sortable wikitable"
 
! Year/period !! Key developments
 
|-
 
| Prior to the 18th century || The outbreak of influenza reported in 1173 is not considered to be a pandemic, and other reports to 1500 generally lack reliability. The outbreak of 1510 is probably a pandemic reported with spreading from Africa to engulf Europe. The outbreak of 1557 is possibly a pandemic. The first influenza pandemic agreed by all authors occurs in 1580.<ref name="A history of influenza" />
 
|-
 
| 18th century || Data from this century is more informative of pandemics that those of previous years. The first agreed influenza pandemic of the 18th century begins in 1729.<ref name="A history of influenza" />
 
|-
 
| 19th century || Two influenza pandemics are recorded in the century.<ref name="A history of influenza" /> [[wikipedia:Avian influenza|Avian influenza]] is recorded for the first time.<ref name="avian-influenza" />
 
|-
 
| 20th Century || Influenza pandemics are recorded four times, starting with the deadly [[wikipedia:Spanish flu|Spanish flu]]. This is also the period of virus isolation and development of vaccines.<ref name="The Flu Pandemic and You: A Canadian Guide" /> Prior to 20th century, much information about influenza is generally not considered certain. Although the virus seems to have caused epidemics throughout human history, historical data on influenza are difficult to interpret, because the symptoms can be similar to those of other respiratory diseases.<ref>{{Cite journal| pmid = 1724803| volume = 13| issue = 2| pages = 223–234| last = Beveridge| first = W I| title = The chronicle of influenza epidemics| journal = History and Philosophy of the Life Sciences| year = 1991}}</ref><ref name=Potter/>
 
|-
 
| 1945-21th century ||International health organizations merge, and large scale vaccination campaigns begin.<ref name="Springer">{{cite book|title=Vaccine Analysis: Strategies, Principles, and Control|date=2014|publisher=Springer|isbn=9783662450246|page=61|url=https://books.google.ca/books?id=vJKeBQAAQBAJ&pg=PA61}}</ref>
 
|-
 
| 21th century || Worldwide accessible databases multiply in order to control outbreaks and prevent pandemics. New influenza strain outbreaks still occur. Efficacy of currently available vaccines is still insufficient to diminish the current annual health burden induced by the virus.<ref name="Springer"/>
 
 
|-
 
|-
 
|}
 
|}
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[[File:Reported cases of influenza in American countries for the period 1949-1958.png|thumb|center|400px|Reported cases of influenza in American countries for the period 1949-1958, illustrating the severity of [[wikipedia:influenza A virus subtype H2N2|influenza A virus subtype H2N2]] [[wikipedia:pandemic|pandemic]] in 1957. Chile (not shown in the graph) was severely hit and reported 1,408,430 cases in 1957.<ref name="REPORTED  CASES  OF  NOTIFIABLE  DISEASES IN  THE  AMERICAS 1949  - 1958">{{cite web|title=REPORTED  CASES  OF  NOTIFIABLE  DISEASES IN  THE  AMERICAS 1949  - 1958|url=http://iris.paho.org/xmlui/bitstream/handle/123456789/1330/41680.pdf?sequence=2|website=paho.org|accessdate=22 February 2017}}</ref>]]
 
[[File:Reported cases of influenza in American countries for the period 1949-1958.png|thumb|center|400px|Reported cases of influenza in American countries for the period 1949-1958, illustrating the severity of [[wikipedia:influenza A virus subtype H2N2|influenza A virus subtype H2N2]] [[wikipedia:pandemic|pandemic]] in 1957. Chile (not shown in the graph) was severely hit and reported 1,408,430 cases in 1957.<ref name="REPORTED  CASES  OF  NOTIFIABLE  DISEASES IN  THE  AMERICAS 1949  - 1958">{{cite web|title=REPORTED  CASES  OF  NOTIFIABLE  DISEASES IN  THE  AMERICAS 1949  - 1958|url=http://iris.paho.org/xmlui/bitstream/handle/123456789/1330/41680.pdf?sequence=2|website=paho.org|accessdate=22 February 2017}}</ref>]]
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 +
=== Google Trends ===
 +
 +
The image below shows {{w|Google Trends}} data from 2004 (the start of data availability) to June 2020 (when the screenshot was taken). See local maximums indicating interest peaking in April 2009 ({{w|Swine flu pandemic}}), and March 2020 ({{w|COVID-19 pandemic}}).<ref>{{cite web |title=Influenza |url=https://trends.google.com/trends/explore?date=all&q=Influenza |website=trends.google.com |accessdate=24 June 2020}}</ref>
 +
 +
[[File:Influenza Google Trends.png|thumb|center|800px]]
  
 
==Full timeline==
 
==Full timeline==
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| 1830–1833 || || Human || Epidemic || Influenza pandemic breaks out in the winter of 1830 in China, further spreading southwards by sea to reach the [[wikipedia:Philippines|Philippines]], [[wikipedia:India|India]] and [[wikipedia:Indonesia|Indonesia]], and across [[wikipedia:Russia|Russia]] into [[wikipedia:Europe|Europe]]. By 1831, the epidemic reaches the [[wikipedia:Americas|Americas]]. Overall the attack rate is estimated at 20–25% of the population, but the mortality rate is not exceptionally high.<ref name="A history of influenza" /> || [[wikipedia:Eurasia|Eurasia]], [[wikipedia:Americas|Americas]]
 
| 1830–1833 || || Human || Epidemic || Influenza pandemic breaks out in the winter of 1830 in China, further spreading southwards by sea to reach the [[wikipedia:Philippines|Philippines]], [[wikipedia:India|India]] and [[wikipedia:Indonesia|Indonesia]], and across [[wikipedia:Russia|Russia]] into [[wikipedia:Europe|Europe]]. By 1831, the epidemic reaches the [[wikipedia:Americas|Americas]]. Overall the attack rate is estimated at 20–25% of the population, but the mortality rate is not exceptionally high.<ref name="A history of influenza" /> || [[wikipedia:Eurasia|Eurasia]], [[wikipedia:Americas|Americas]]
 
|-
 
|-
| 1878 || || Non-human (Avian) || Scientific development || [[wikipedia:Avian influenza|Avian influenza]] is recorded for the first time. Originally known as ''Fowl Plague''.<ref name=avian-influenza>{{cite web|url=http://articles.extension.org/pages/24401/history-of-avian-influenza|title=History of Avian Influenza|website=extension.org|accessdate=20 January 2017}}</ref> || [[wikipedia:Italy|Italy]]
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| 1878 || || Non-human (Avian) || Research || [[wikipedia:Avian influenza|Avian influenza]] is recorded for the first time. Originally known as ''Fowl Plague''.<ref name=avian-influenza>{{cite web|url=http://articles.extension.org/pages/24401/history-of-avian-influenza|title=History of Avian Influenza|website=extension.org|accessdate=20 January 2017}}</ref> || [[wikipedia:Italy|Italy]]
 
|-
 
|-
 
| 1889–1892 || [[w:Influenza A virus subtype H3N8|H3N8]]?<ref name="Valleron_2010">{{cite journal |title=Transmissibility and geographic spread of the 1889 influenza pandemic |journal={{w|PNAS}} |author-first1=Alain-Jacques |author-last1=Valleron |author-first2=Anne |author-last2=Cori |author-first3=Sophie |author-last3=Valtat |author-first4=Sofia |author-last4=Meurisse |author-first5=Fabrice |author-last5=Carrat |author-first6=Pierre-Yves |author-last6=Boëlle |date=11 May 2010 |doi=10.1073/pnas.1000886107 |volume=107 |issue=19 |pages=8778–8781 |pmid=20421481 |pmc=2889325}}</ref> {{w|H2N2}}?<ref>{{Cite journal|last=Hilleman|first=Maurice R.|date=2002|title=Realities and enigmas of human viral influenza: pathogenesis, epidemiology and control|journal=Vaccine|volume=20|issue=25–26|pages=3068–3087|citeseerx=10.1.1.523.7697|doi=10.1016/S0264-410X(02)00254-2|pmid=12163258}}</ref><ref>{{Cite web|title=The Influenza H5N1 Report|last=|first=|date=April 2, 1998|website=Pliva.com|url=https://web.archive.org/web/20041024115910/http://www.pilva.com/en/edoctor/article8.asp|archive-date=24 October 2004}}</ref>|| Human || Epidemic || [[wikipedia:1889–90 flu pandemic|1889–90 flu pandemic]]. Dubbed the "Russian pandemic". Attack rates are reported in 408 geographic entities from 14 European countries and in the United States. Rapidly spreading, the pandemic would take only 4 months to circumnavigate the planet, reaching the United States 70 days after the original outbreak in [[wikipedia:Saint Petersburg|Saint Petersburg]].<ref name="Transmissibility and geographic spread of the 1889 influenza pandemic">{{cite web|title=Transmissibility and geographic spread of the 1889 influenza pandemic|url=http://www.pnas.org/content/107/19/8778.full|website=pnas.org|accessdate=1 February 2017}}</ref>  Following this pandemic, interest is renewed in examining the recurrence patterns of influenza.<ref name="Pandemic influenza – including a risk assessment of H5N1" /> || [[wikipedia:Eurasia|Eurasia]], [[wikipedia:Americas|Americas]]
 
| 1889–1892 || [[w:Influenza A virus subtype H3N8|H3N8]]?<ref name="Valleron_2010">{{cite journal |title=Transmissibility and geographic spread of the 1889 influenza pandemic |journal={{w|PNAS}} |author-first1=Alain-Jacques |author-last1=Valleron |author-first2=Anne |author-last2=Cori |author-first3=Sophie |author-last3=Valtat |author-first4=Sofia |author-last4=Meurisse |author-first5=Fabrice |author-last5=Carrat |author-first6=Pierre-Yves |author-last6=Boëlle |date=11 May 2010 |doi=10.1073/pnas.1000886107 |volume=107 |issue=19 |pages=8778–8781 |pmid=20421481 |pmc=2889325}}</ref> {{w|H2N2}}?<ref>{{Cite journal|last=Hilleman|first=Maurice R.|date=2002|title=Realities and enigmas of human viral influenza: pathogenesis, epidemiology and control|journal=Vaccine|volume=20|issue=25–26|pages=3068–3087|citeseerx=10.1.1.523.7697|doi=10.1016/S0264-410X(02)00254-2|pmid=12163258}}</ref><ref>{{Cite web|title=The Influenza H5N1 Report|last=|first=|date=April 2, 1998|website=Pliva.com|url=https://web.archive.org/web/20041024115910/http://www.pilva.com/en/edoctor/article8.asp|archive-date=24 October 2004}}</ref>|| Human || Epidemic || [[wikipedia:1889–90 flu pandemic|1889–90 flu pandemic]]. Dubbed the "Russian pandemic". Attack rates are reported in 408 geographic entities from 14 European countries and in the United States. Rapidly spreading, the pandemic would take only 4 months to circumnavigate the planet, reaching the United States 70 days after the original outbreak in [[wikipedia:Saint Petersburg|Saint Petersburg]].<ref name="Transmissibility and geographic spread of the 1889 influenza pandemic">{{cite web|title=Transmissibility and geographic spread of the 1889 influenza pandemic|url=http://www.pnas.org/content/107/19/8778.full|website=pnas.org|accessdate=1 February 2017}}</ref>  Following this pandemic, interest is renewed in examining the recurrence patterns of influenza.<ref name="Pandemic influenza – including a risk assessment of H5N1" /> || [[wikipedia:Eurasia|Eurasia]], [[wikipedia:Americas|Americas]]
 
|-
 
|-
| 1901 || || Non-human (Avian) || Scientific development || The causative organism of [[wikipedia:avian influenza|avian influenza]] is discovered to be a virus.<ref name="FLU-LAB-NET - About Avian Influenza">{{cite web|title=FLU-LAB-NET - About Avian Influenza|url=https://science.vla.gov.uk/flu-lab-net/about_AI.html|website=science.vla.gov.uk|accessdate=28 January 2017}}</ref> ||  
+
| 1901 || || Non-human (Avian) || Research || The causative organism of [[wikipedia:avian influenza|avian influenza]] is discovered to be a virus.<ref name="FLU-LAB-NET - About Avian Influenza">{{cite web|title=FLU-LAB-NET - About Avian Influenza|url=https://science.vla.gov.uk/flu-lab-net/about_AI.html|website=science.vla.gov.uk|accessdate=28 January 2017}}</ref> ||  
 
|-
 
|-
 
| 1918-1920 || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Epidemic || The [[wikipedia:Spanish flu|Spanish flu]] ([[wikipedia:influenza A virus subtype H1N1|H1N1]]) [[wikipedia:pandemic|pandemic]] is considered one of the deadliest natural disasters ever, infecting an estimated 500 million people across the globe and claiming between 50 and 100 million lives. This pandemic would be described as "the greatest medical holocaust in history" and is estimated to have killed in a single year more people than the [[wikipedia:Black Death|Black Death]] [[wikipedia:bubonic plague|bubonic plague]] killed in four years from 1347 to 1351.<ref>{{cite web|title=The Influenza Pandemic of 1918|url=https://virus.stanford.edu/uda/|website=stanford.edu|accessdate=28 January 2017}}</ref><ref>{{cite journal |author=Potter CW|title=A History of Influenza |journal=Journal of Applied Microbiology |date=October 2001 |volume=91 |issue=4 |pages=572–579 |pmid=11576290 | doi=10.1046/j.1365-2672.2001.01492.x}}</ref> ||Worldwide; originated in [[wikipedia:France|France]] (disputed)
 
| 1918-1920 || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Epidemic || The [[wikipedia:Spanish flu|Spanish flu]] ([[wikipedia:influenza A virus subtype H1N1|H1N1]]) [[wikipedia:pandemic|pandemic]] is considered one of the deadliest natural disasters ever, infecting an estimated 500 million people across the globe and claiming between 50 and 100 million lives. This pandemic would be described as "the greatest medical holocaust in history" and is estimated to have killed in a single year more people than the [[wikipedia:Black Death|Black Death]] [[wikipedia:bubonic plague|bubonic plague]] killed in four years from 1347 to 1351.<ref>{{cite web|title=The Influenza Pandemic of 1918|url=https://virus.stanford.edu/uda/|website=stanford.edu|accessdate=28 January 2017}}</ref><ref>{{cite journal |author=Potter CW|title=A History of Influenza |journal=Journal of Applied Microbiology |date=October 2001 |volume=91 |issue=4 |pages=572–579 |pmid=11576290 | doi=10.1046/j.1365-2672.2001.01492.x}}</ref> ||Worldwide; originated in [[wikipedia:France|France]] (disputed)
 
|-
 
|-
| 1931 || || Non-human (porcine) || Scientific development || The real cause of the flu, the {{w|Influenza Virus}}, is discovered by American virologist [[wikipedia:Richard Shope|Richard Shope]]<ref>{{cite journal |last1=Kopecka |first1=Tereza |title=Scurvy and Flu in 1900: The Truth Lost in Evidence |doi=10.5281/zenodo.3267778}}</ref>, who finds the [[wikipedia:Etiology|etiological]] cause of influenza in pigs.<ref>{{cite journal |last=Shimizu |first=K |title=History of influenza epidemics and discovery of influenza virus |journal=Nippon Rinsho |date=October 1997 |volume=55 |issue=10|pages=2505–201 |pmid=9360364}}</ref> || {{w|United States}}
+
| 1931 || || Non-human (porcine) || Research || The real cause of the flu, the {{w|Influenza Virus}}, is discovered by American virologist [[wikipedia:Richard Shope|Richard Shope]]<ref>{{cite journal |last1=Kopecka |first1=Tereza |title=Scurvy and Flu in 1900: The Truth Lost in Evidence |doi=10.5281/zenodo.3267778}}</ref>, who finds the [[wikipedia:Etiology|etiological]] cause of influenza in pigs.<ref>{{cite journal |last=Shimizu |first=K |title=History of influenza epidemics and discovery of influenza virus |journal=Nippon Rinsho |date=October 1997 |volume=55 |issue=10|pages=2505–201 |pmid=9360364}}</ref> || {{w|United States}}
 
|-
 
|-
| 1933 || || Human || Scientific development || British researchers Wilson Smith, Christopher Andrews, and [[wikipedia:Patrick Laidlaw|Patrick Laidlaw]] are the first to identify the human flu virus by experimenting with {{w|ferret}}s.<ref>{{cite journal |last=Smith |first=W |author2=Andrewes CH |author3=Laidlaw PP  |title=A virus obtained from influenza patients |journal=Lancet |year=1933 |volume=2 |pages=66–68 |doi=10.1016/S0140-6736(00)78541-2 |issue=5732}}</ref><ref>Dobson, Mary. 2007. Disease: The Extraordinary Stories behind History’s Deadliest Killers. London, UK: Quercus.</ref><ref name="The Evolving History of Influenza Viruses and Influenza Vaccines 1" />|| [[wikipedia:United Kingdom|United Kingdom]]  
+
| 1933 || || Human || Research || British researchers Wilson Smith, Christopher Andrews, and [[wikipedia:Patrick Laidlaw|Patrick Laidlaw]] are the first to identify the human flu virus by experimenting with {{w|ferret}}s.<ref>{{cite journal |last=Smith |first=W |author2=Andrewes CH |author3=Laidlaw PP  |title=A virus obtained from influenza patients |journal=Lancet |year=1933 |volume=2 |pages=66–68 |doi=10.1016/S0140-6736(00)78541-2 |issue=5732}}</ref><ref>Dobson, Mary. 2007. Disease: The Extraordinary Stories behind History’s Deadliest Killers. London, UK: Quercus.</ref><ref name="The Evolving History of Influenza Viruses and Influenza Vaccines 1" />|| [[wikipedia:United Kingdom|United Kingdom]]  
 
|-
 
|-
| 1936 || || Human || Medical development (vaccine) || Soviet scientist A. Smorodintseff first attempts vaccination with a live influenza vaccine that has been passed about 30-times in eggs. Smorodintseff would later report that the modified virus causes only a barely perceptible, slight fever and that subjects are protected against reinfection.<ref name="The Evolving History of Influenza Viruses and Influenza Vaccines 2">{{cite web|title=The Evolving History of Influenza Viruses and Influenza Vaccines 2|url=http://www.medscape.com/viewarticle/812621_2|website=medscape.com|accessdate=31 January 2017}}</ref> || [[wikipedia:Russia|Russia]]  
+
| 1936 || || Human || Medical development (vaccine) || Soviet scientist A. Smorodintseff conducts the first attempt of a vaccination with a live influenza vaccine that has been passed about 30-times in eggs. Smorodintseff would later report that the modified virus causes only a barely perceptible, slight fever and that subjects are protected against reinfection.<ref name="The Evolving History of Influenza Viruses and Influenza Vaccines 2">{{cite web|title=The Evolving History of Influenza Viruses and Influenza Vaccines 2|url=http://www.medscape.com/viewarticle/812621_2|website=medscape.com|accessdate=31 January 2017}}</ref><ref>{{cite journal |last1=Kuszewski’ |first1=K. |last2=Brydak |first2=L. |title=The epidemiology and history of influenza |url=http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.564.9823&rep=rep1&type=pdf}}</ref> || [[wikipedia:Russia|Russia]]  
 
|-
 
|-
 
| 1942 || {{w|Influenzavirus B}} || Human || Medical development (vaccine) || Bivalent vaccine is produced after the discovery of [[w:Influenzavirus B|influenza B]].<ref name="The Evolving History of Influenza Viruses and Influenza Vaccines 1">{{cite web|title=The Evolving History of Influenza Viruses and Influenza Vaccines  1|url=http://www.medscape.com/viewarticle/812621|website=medscape.com|accessdate=31 January 2017}}</ref> ||  
 
| 1942 || {{w|Influenzavirus B}} || Human || Medical development (vaccine) || Bivalent vaccine is produced after the discovery of [[w:Influenzavirus B|influenza B]].<ref name="The Evolving History of Influenza Viruses and Influenza Vaccines 1">{{cite web|title=The Evolving History of Influenza Viruses and Influenza Vaccines  1|url=http://www.medscape.com/viewarticle/812621|website=medscape.com|accessdate=31 January 2017}}</ref> ||  
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| 1952 || || || Organization (Research institute) || The [[wikipedia:Global Influenza Surveillance and Response System (GISRS)|Global Influenza Surveillance and Response System (GISRS)]] is established by the [[wikipedia:WHO|WHO]] with the purpose of conducting global influenza virological surveillance. GISRS monitors the evolution of influenza viruses and provides recommendations in areas including laboratory diagnostics, vaccines, antiviral susceptibility and risk assessment. It also serves as a global alert mechanism for the emergence of influenza viruses with pandemic potential.<ref>{{cite web|title=Global influenza virological surveillance|url=http://www.who.int/gho/epidemic_diseases/influenza/virological_surveillance/en/|publisher=[[wikipedia:WHO|WHO]]|accessdate=28 January 2017}}</ref> ||  
 
| 1952 || || || Organization (Research institute) || The [[wikipedia:Global Influenza Surveillance and Response System (GISRS)|Global Influenza Surveillance and Response System (GISRS)]] is established by the [[wikipedia:WHO|WHO]] with the purpose of conducting global influenza virological surveillance. GISRS monitors the evolution of influenza viruses and provides recommendations in areas including laboratory diagnostics, vaccines, antiviral susceptibility and risk assessment. It also serves as a global alert mechanism for the emergence of influenza viruses with pandemic potential.<ref>{{cite web|title=Global influenza virological surveillance|url=http://www.who.int/gho/epidemic_diseases/influenza/virological_surveillance/en/|publisher=[[wikipedia:WHO|WHO]]|accessdate=28 January 2017}}</ref> ||  
 
|-
 
|-
| 1956 || || Non-human (equine) || Scientific development || Viruses that cause {{w|equine influenza}} are first isolated.<ref name="dssda">{{cite journal |last1=Singh |first1=Raj K. |last2=Khurana |first2=Sandip K. |last3=Chakraborty |first3=Sandip |last4=Malik |first4=Yashpal S. |last5=Virmani |first5=Nitin |last6=Singh |first6=Rajendra |last7=Tripathi |first7=Bhupendra N. |last8=Munir |first8=Muhammad |last9=van der Kolk |first9=Johannes H. |last10=Dhama |first10=Kuldeep |last11=Munjal |first11=Ashok |last12=Khandia |first12=Rekha |last13=Karthik |first13=Kumaragurubaran |title=A Comprehensive Review on Equine Influenza Virus: Etiology, Epidemiology, Pathobiology, Advances in Developing Diagnostics, Vaccines, and Control Strategies |doi=10.3389/fmicb.2018.01941 |url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6135912/}}</ref> ||
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| 1956 || || Non-human (equine) || Research || Viruses that cause {{w|equine influenza}} are first isolated.<ref name="dssda">{{cite journal |last1=Singh |first1=Raj K. |last2=Khurana |first2=Sandip K. |last3=Chakraborty |first3=Sandip |last4=Malik |first4=Yashpal S. |last5=Virmani |first5=Nitin |last6=Singh |first6=Rajendra |last7=Tripathi |first7=Bhupendra N. |last8=Munir |first8=Muhammad |last9=van der Kolk |first9=Johannes H. |last10=Dhama |first10=Kuldeep |last11=Munjal |first11=Ashok |last12=Khandia |first12=Rekha |last13=Karthik |first13=Kumaragurubaran |title=A Comprehensive Review on Equine Influenza Virus: Etiology, Epidemiology, Pathobiology, Advances in Developing Diagnostics, Vaccines, and Control Strategies |doi=10.3389/fmicb.2018.01941 |url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6135912/}}</ref> ||
 
|-
 
|-
 
| 1957 || {{w|H2N2}} || Human || Epidemic || New, virulent [[wikipedia:influenza A virus subtype H2N2|influenza A virus subtype H2N2]] breaks out in [[wikipedia:Guizhou|Guizhou]] (China). It would turn into pandemic ([[wikipedia:Pandemic severity index|category 2]]) and kill 1 to 4 million people.<ref name=Influenza-Pandemics>{{cite web|url=http://www.historyofvaccines.org/content/articles/influenza-pandemics|title=Influenza Pandemics|accessdate=28 January 2017|website=historyofvaccines.org}}</ref> It is considered the second major influenza pandemic to occur in the 20th century, after the [[wikipedia:Spanish flu|Spanish flu]].<ref>{{cite web|title=Asian flu of 1957|url=https://www.britannica.com/event/Asian-flu-of-1957|website=britannica.com|accessdate=28 January 2017}}</ref><ref name="Pandemic influenza – including a risk assessment of H5N1" /> || [[wikipedia:China|China]]
 
| 1957 || {{w|H2N2}} || Human || Epidemic || New, virulent [[wikipedia:influenza A virus subtype H2N2|influenza A virus subtype H2N2]] breaks out in [[wikipedia:Guizhou|Guizhou]] (China). It would turn into pandemic ([[wikipedia:Pandemic severity index|category 2]]) and kill 1 to 4 million people.<ref name=Influenza-Pandemics>{{cite web|url=http://www.historyofvaccines.org/content/articles/influenza-pandemics|title=Influenza Pandemics|accessdate=28 January 2017|website=historyofvaccines.org}}</ref> It is considered the second major influenza pandemic to occur in the 20th century, after the [[wikipedia:Spanish flu|Spanish flu]].<ref>{{cite web|title=Asian flu of 1957|url=https://www.britannica.com/event/Asian-flu-of-1957|website=britannica.com|accessdate=28 January 2017}}</ref><ref name="Pandemic influenza – including a risk assessment of H5N1" /> || [[wikipedia:China|China]]
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| 1966 || || || Medical development || The activity of {{w|N-acetylcysteine}} (NAC) against influenza is first suggested.<ref>{{cite journal | pmid = 5985279 | volume=6 | title=In vivo antiviral chemotherapy. II. Anti-influenza action of compounds affecting mucous secretions | year=1966 | journal=Antimicrob Agents Chemother | pages=503–8 |vauthors=Streightoff F, Redman CE, DeLong DC }}</ref> ||
 
| 1966 || || || Medical development || The activity of {{w|N-acetylcysteine}} (NAC) against influenza is first suggested.<ref>{{cite journal | pmid = 5985279 | volume=6 | title=In vivo antiviral chemotherapy. II. Anti-influenza action of compounds affecting mucous secretions | year=1966 | journal=Antimicrob Agents Chemother | pages=503–8 |vauthors=Streightoff F, Redman CE, DeLong DC }}</ref> ||
 
|-
 
|-
| 1968 || || Human || Study || Study of 1,900 male cadets after the 1968 Hong Kong A2 influenza epidemic at a South Carolina military academy, compares three groups: nonsmokers, heavy smokers, and light smokers. Compared with nonsmokers, heavy smokers (more than 20 cigarettes per day) had 21% more illnesses and 20% more bed rest, light smokers (20 cigarettes or fewer per day) had 10% more illnesses and 7% more bed rest.<ref name="Finklea_1969">{{cite journal | vauthors = Finklea JF, Sandifer SH, Smith DD | title = Cigarette smoking and epidemic influenza | journal = American Journal of Epidemiology | volume = 90 | issue = 5 | pages = 390–9 | date = November 1969 | pmid = 5356947 | doi = 10.1093/oxfordjournals.aje.a121084 }}</ref> || {{w|United States}}
+
| 1968 || || Human || Research || Study of 1,900 male cadets after the 1968 Hong Kong A2 influenza epidemic at a South Carolina military academy, compares three groups: nonsmokers, heavy smokers, and light smokers. Compared with nonsmokers, heavy smokers (more than 20 cigarettes per day) had 21% more illnesses and 20% more bed rest, light smokers (20 cigarettes or fewer per day) had 10% more illnesses and 7% more bed rest.<ref name="Finklea_1969">{{cite journal | vauthors = Finklea JF, Sandifer SH, Smith DD | title = Cigarette smoking and epidemic influenza | journal = American Journal of Epidemiology | volume = 90 | issue = 5 | pages = 390–9 | date = November 1969 | pmid = 5356947 | doi = 10.1093/oxfordjournals.aje.a121084 }}</ref> || {{w|United States}}
 
|-
 
|-
 
| 1968-1969 || [[wikipedia:Influenza A virus subtype H3N2|H3N2]] || Human || Epidemic ||[[wikipedia:1968 flu pandemic|Hong Kong flu]] ([[wikipedia:Influenza A virus subtype H3N2|H3N2]]) pandemic breaks out, caused by a virus that has been “updated” from the previously circulating virus by reassortment of avian genes.<ref name="Pandemic influenza – including a risk assessment of H5N1" /><ref>{{cite journal|last1=Viboud|first1=Cécile|last2=Grais Bernard|first2=Rebecca F.|last3=Lafont|first3=A. P.|last4=Miller|first4=Mark A.|last5=Simonsen|first5=Lone|title=Multinational Impact of the 1968 Hong Kong Influenza Pandemic: Evidence for a Smoldering Pandemic|doi=10.1086/431150|url=https://academic.oup.com/jid/article/192/2/233/856805/Multinational-Impact-of-the-1968-Hong-Kong|accessdate=1 February 2017}}</ref> || [[wikipedia:Eurasia|Eurasia]], [[wikipedia:North America|North America]]
 
| 1968-1969 || [[wikipedia:Influenza A virus subtype H3N2|H3N2]] || Human || Epidemic ||[[wikipedia:1968 flu pandemic|Hong Kong flu]] ([[wikipedia:Influenza A virus subtype H3N2|H3N2]]) pandemic breaks out, caused by a virus that has been “updated” from the previously circulating virus by reassortment of avian genes.<ref name="Pandemic influenza – including a risk assessment of H5N1" /><ref>{{cite journal|last1=Viboud|first1=Cécile|last2=Grais Bernard|first2=Rebecca F.|last3=Lafont|first3=A. P.|last4=Miller|first4=Mark A.|last5=Simonsen|first5=Lone|title=Multinational Impact of the 1968 Hong Kong Influenza Pandemic: Evidence for a Smoldering Pandemic|doi=10.1086/431150|url=https://academic.oup.com/jid/article/192/2/233/856805/Multinational-Impact-of-the-1968-Hong-Kong|accessdate=1 February 2017}}</ref> || [[wikipedia:Eurasia|Eurasia]], [[wikipedia:North America|North America]]
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| 1978 || {{w|Influenzavirus A}}, {{w|influenzavirus B}} || Human || Medical development (vaccine) || The first trivalent influenza vaccine is introduced. It includes two influenza A strains and one influenza B strain.<ref name="The Evolving History of Influenza Viruses and Influenza Vaccines 1" /> ||  
 
| 1978 || {{w|Influenzavirus A}}, {{w|influenzavirus B}} || Human || Medical development (vaccine) || The first trivalent influenza vaccine is introduced. It includes two influenza A strains and one influenza B strain.<ref name="The Evolving History of Influenza Viruses and Influenza Vaccines 1" /> ||  
 
|-
 
|-
| 1979 || || Human || Study || Surveillance of an influenza outbreak at a military base for women in {{w|Israel}} reveals that influenza symptoms developed in 60.0% of the current smokers vs. 41.6% of the nonsmokers.<ref name="pmid7212144">{{cite journal | vauthors = Kark JD, Lebiush M | title = Smoking and epidemic influenza-like illness in female military recruits: a brief survey | journal = American Journal of Public Health | volume = 71 | issue = 5 | pages = 530–2 | date = May 1981 | pmid = 7212144 | pmc = 1619723 | doi = 10.2105/AJPH.71.5.530 }}</ref> || {{w|Israel}}
+
| 1979 || || Human || Research || Surveillance of an influenza outbreak at a military base for women in {{w|Israel}} reveals that influenza symptoms developed in 60.0% of the current smokers vs. 41.6% of the nonsmokers.<ref name="pmid7212144">{{cite journal | vauthors = Kark JD, Lebiush M | title = Smoking and epidemic influenza-like illness in female military recruits: a brief survey | journal = American Journal of Public Health | volume = 71 | issue = 5 | pages = 530–2 | date = May 1981 | pmid = 7212144 | pmc = 1619723 | doi = 10.2105/AJPH.71.5.530 }}</ref> || {{w|Israel}}
 
|-
 
|-
 
| 1980 || {{w|Influenzavirus A}}, {{w|Influenzavirus B}} || Human || Medical development (vaccine) || United States [[wikipedia:FDA|FDA]] approves influenza vaccine ''Fluzone'' ([[wikipedia:Sanofi Pasteur|Sanofi Pasteur]]), developed for A subtype viruses and type B virus contained in the vaccine.<ref>{{cite web|title=Fluzone|url=https://www.vaccineshoppe.com/image.cfm?pi=flu&image_type=product_pdf|website=vaccineshoppe.com|accessdate=30 January 2017}}</ref> || [[wikipedia:United States|United States]]  
 
| 1980 || {{w|Influenzavirus A}}, {{w|Influenzavirus B}} || Human || Medical development (vaccine) || United States [[wikipedia:FDA|FDA]] approves influenza vaccine ''Fluzone'' ([[wikipedia:Sanofi Pasteur|Sanofi Pasteur]]), developed for A subtype viruses and type B virus contained in the vaccine.<ref>{{cite web|title=Fluzone|url=https://www.vaccineshoppe.com/image.cfm?pi=flu&image_type=product_pdf|website=vaccineshoppe.com|accessdate=30 January 2017}}</ref> || [[wikipedia:United States|United States]]  
 
|-
 
|-
| 1982 || || Human || Study || Study concludes that smoking may substantially contribute to the growth of influenza epidemics affecting the entire population.<ref name="Kark_1982">{{cite journal | vauthors = Kark JD, Lebiush M, Rannon L | title = Cigarette smoking as a risk factor for epidemic a(h1n1) influenza in young men | journal = The New England Journal of Medicine | volume = 307 | issue = 17 | pages = 1042–6 | date = October 1982 | pmid = 7121513 | doi = 10.1056/NEJM198210213071702 }}</ref> ||
+
| 1982 || || Human || Research || Study concludes that smoking may substantially contribute to the growth of influenza epidemics affecting the entire population.<ref name="Kark_1982">{{cite journal | vauthors = Kark JD, Lebiush M, Rannon L | title = Cigarette smoking as a risk factor for epidemic a(h1n1) influenza in young men | journal = The New England Journal of Medicine | volume = 307 | issue = 17 | pages = 1042–6 | date = October 1982 | pmid = 7121513 | doi = 10.1056/NEJM198210213071702 }}</ref> ||
 
|-
 
|-
 
| 1983 || {{w|H5N8}} || Non–human (avian) || {{w|Epizootic}} || Avian [[wikipedia:Influenza A virus subtype H5N8|Influenza A virus subtype H5N8]] breaks out. 8,000 turkeys, 28,020 chickens, and 270,000 ducks are slaughtered.<ref>{{cite web|title=Influenza Strain Details for A/turkey/Ireland/?/1983(H5N8)|url=https://www.fludb.org/brc/fluStrainDetails.spg?strainName=A/turkey/Ireland/?/1983(H5N8)&decorator=influenza|publisher=Influenza Research Database|accessdate=1 February 2017}}</ref><ref name="Avian flu: a history" /> || [[wikipedia:Ireland|Ireland]]
 
| 1983 || {{w|H5N8}} || Non–human (avian) || {{w|Epizootic}} || Avian [[wikipedia:Influenza A virus subtype H5N8|Influenza A virus subtype H5N8]] breaks out. 8,000 turkeys, 28,020 chickens, and 270,000 ducks are slaughtered.<ref>{{cite web|title=Influenza Strain Details for A/turkey/Ireland/?/1983(H5N8)|url=https://www.fludb.org/brc/fluStrainDetails.spg?strainName=A/turkey/Ireland/?/1983(H5N8)&decorator=influenza|publisher=Influenza Research Database|accessdate=1 February 2017}}</ref><ref name="Avian flu: a history" /> || [[wikipedia:Ireland|Ireland]]
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| 1990-1996 || || Human || Medical development || [[wikipedia:Oseltamivir|Oseltamivir]] (often referenced by its trademark name Tamiflu) is developed by [[wikipedia:Gilead Sciences|Gilead Sciences]], using [[wikipedia:shikimic acid|shikimic acid]] for [[wikipedia:Biosynthesis|synthesis]]. It would be widely used in further antiviral campaigns targeting influenza [[wikipedia:Influenza A virus|A]] and [[wikipedia:Influenzavirus B|B]]. Included on the [[wikipedia:World Health Organization's List of Essential Medicines|World Health Organization's List of Essential Medicines]].<ref name=WHO2015E>{{cite web |url=http://www.who.int/medicines/publications/essentialmedicines/EML2015_8-May-15.pdf |title=19th WHO Model List of Essential Medicines (April 2015) |date=April 2015 |accessdate=29 January 2017 |publisher=[[wikipedia:WHO|WHO]]}}</ref>|| [[wikipedia:United States|United States]]
 
| 1990-1996 || || Human || Medical development || [[wikipedia:Oseltamivir|Oseltamivir]] (often referenced by its trademark name Tamiflu) is developed by [[wikipedia:Gilead Sciences|Gilead Sciences]], using [[wikipedia:shikimic acid|shikimic acid]] for [[wikipedia:Biosynthesis|synthesis]]. It would be widely used in further antiviral campaigns targeting influenza [[wikipedia:Influenza A virus|A]] and [[wikipedia:Influenzavirus B|B]]. Included on the [[wikipedia:World Health Organization's List of Essential Medicines|World Health Organization's List of Essential Medicines]].<ref name=WHO2015E>{{cite web |url=http://www.who.int/medicines/publications/essentialmedicines/EML2015_8-May-15.pdf |title=19th WHO Model List of Essential Medicines (April 2015) |date=April 2015 |accessdate=29 January 2017 |publisher=[[wikipedia:WHO|WHO]]}}</ref>|| [[wikipedia:United States|United States]]
 
|-
 
|-
| 1993 || || Human || Study || In a prospective study of community-dwelling people 60–90 years of age, it is found that 23% of smokers have clinical influenza as compared with 6% of non-smokers.<ref name="pmid10487646">{{cite journal | vauthors = Nicholson KG, Kent J, Hammersley V | title = Influenza A among community-dwelling elderly persons in Leicestershire during winter 1993-4; cigarette smoking as a risk factor and the efficacy of influenza vaccination | journal = Epidemiology and Infection | volume = 123 | issue = 1 | pages = 103–8 | date = August 1999 | pmid = 10487646 | pmc = 2810733 | doi = 10.1017/S095026889900271X }}</ref> ||
+
| 1993 || || Human || Research || In a prospective study of community-dwelling people 60–90 years of age, it is found that 23% of smokers have clinical influenza as compared with 6% of non-smokers.<ref name="pmid10487646">{{cite journal | vauthors = Nicholson KG, Kent J, Hammersley V | title = Influenza A among community-dwelling elderly persons in Leicestershire during winter 1993-4; cigarette smoking as a risk factor and the efficacy of influenza vaccination | journal = Epidemiology and Infection | volume = 123 | issue = 1 | pages = 103–8 | date = August 1999 | pmid = 10487646 | pmc = 2810733 | doi = 10.1017/S095026889900271X }}</ref> ||
 
|-
 
|-
 
| 1993 || {{w|Influenzavirus A}} || Human || Medical development || {{w|Flumadine}} ({{w|rimantadine}}) is approved by the United States {{w|Food and Drug Administration}} for preventing and treating infection caused by {{w|influenzavirus A}}.<ref name="Rees"/> || {{w|United States}}
 
| 1993 || {{w|Influenzavirus A}} || Human || Medical development || {{w|Flumadine}} ({{w|rimantadine}}) is approved by the United States {{w|Food and Drug Administration}} for preventing and treating infection caused by {{w|influenzavirus A}}.<ref name="Rees"/> || {{w|United States}}
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| 2004 || {{w|Influenzavirus A}} {{w|H5N2}} || Non–human (avian) || {{w|Epizootic}} || Avian [[wikipedia:influenza A virus subtype H5N2|influenza A virus subtype H5N2]] infects birds in [[wikipedia:Texas|Texas]]. 6,600 infected broiler chickens are slaughtered.<ref>{{cite web|title=Highly Pathogenic Avian Influenza|url=https://www.aphis.usda.gov/animal_health/emergingissues/impactworksheets/iw_2004_files/domestic/hpaitexas032004.htm|website=usda.gov|accessdate=1 February 2017}}</ref><ref name="Avian flu: a history" /> || [[wikipedia:United States|United States]]
 
| 2004 || {{w|Influenzavirus A}} {{w|H5N2}} || Non–human (avian) || {{w|Epizootic}} || Avian [[wikipedia:influenza A virus subtype H5N2|influenza A virus subtype H5N2]] infects birds in [[wikipedia:Texas|Texas]]. 6,600 infected broiler chickens are slaughtered.<ref>{{cite web|title=Highly Pathogenic Avian Influenza|url=https://www.aphis.usda.gov/animal_health/emergingissues/impactworksheets/iw_2004_files/domestic/hpaitexas032004.htm|website=usda.gov|accessdate=1 February 2017}}</ref><ref name="Avian flu: a history" /> || [[wikipedia:United States|United States]]
 
|-
 
|-
| 2004 || {{w|H3N8}} || Non-human ({{w|Canidae}}) || Scientific development || {{w|Canine influenza}} (dog flu) virus subtype H3N8, is discovered to cause disease in canines.<ref>{{cite journal |last1=Payungporn |first1=Sunchai |last2=Crawford |first2=P. Cynda |last3=Kouo |first3=Theodore S. |last4=Chen |first4=Li-mei |last5=Pompey |first5=Justine |last6=Castleman |first6=William L. |last7=Dubovi |first7=Edward J. |last8=Katz |first8=Jacqueline M. |last9=Donis |first9=Ruben O. |title=Influenza A Virus (H3N8) in Dogs with Respiratory Disease, Florida |doi=10.3201/eid1406.071270 |pmid=18507900 |url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2600298/ |pmc=2600298}}</ref> || {{w|United States}}
+
| 2004 || {{w|H3N8}} || Non-human ({{w|Canidae}}) || Research || {{w|Canine influenza}} (dog flu) virus subtype H3N8, is discovered to cause disease in canines.<ref>{{cite journal |last1=Payungporn |first1=Sunchai |last2=Crawford |first2=P. Cynda |last3=Kouo |first3=Theodore S. |last4=Chen |first4=Li-mei |last5=Pompey |first5=Justine |last6=Castleman |first6=William L. |last7=Dubovi |first7=Edward J. |last8=Katz |first8=Jacqueline M. |last9=Donis |first9=Ruben O. |title=Influenza A Virus (H3N8) in Dogs with Respiratory Disease, Florida |doi=10.3201/eid1406.071270 |pmid=18507900 |url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2600298/ |pmc=2600298}}</ref> || {{w|United States}}
 
|-
 
|-
 
| 2004–2005 || {{w|Influenzavirus A}} ({{w|H3N2}}, {{w|H1N1}}) || Human || Vaccine recommendation || The {{w|World Health Organization}} recommends vaccines to be used in the 2004-2005 northern hemisphere influenza season containing the following:
 
| 2004–2005 || {{w|Influenzavirus A}} ({{w|H3N2}}, {{w|H1N1}}) || Human || Vaccine recommendation || The {{w|World Health Organization}} recommends vaccines to be used in the 2004-2005 northern hemisphere influenza season containing the following:
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||
 
||
 
|-
 
|-
| 2005 || || General || Scientific development || New technology development led by {{w|Elodie Ghedin}} at {{w|The Institute for Genomic Research}} is first published at journal ''[[w:Nature (journal)|Nature]]'' describing over 100 influenza genomes.<ref name=Ghedin05>{{cite journal  |vauthors=Ghedin E, Sengamalay NA, Shumway M, Zaborsky J, Feldblyum T, Subbu V, Spiro DJ, Sitz J, Koo H, Bolotov P, Dernovoy D, Tatusova T, Bao Y, St George K, Taylor J, Lipman DJ, Fraser CM, Taubenberger JK, Salzberg SL |title=Large-scale sequencing of human influenza reveals the dynamic nature of viral genome evolution |journal=Nature |volume=437 |issue=7062 |pages=1162–6 |date=October 2005 |pmid=16208317 |doi=10.1038/nature04239|doi-access=free }} (as [http://cbcb.umd.edu/~salzberg/docs/NatureFluGenomeProjectReprint.pdf PDF]</ref> ||
+
| 2005 || || General || Research (genomics) || New technology development led by {{w|Elodie Ghedin}} at {{w|The Institute for Genomic Research}} is first published at journal ''[[w:Nature (journal)|Nature]]'' describing over 100 influenza {{w|genome}}s.<ref name=Ghedin05>{{cite journal  |vauthors=Ghedin E, Sengamalay NA, Shumway M, Zaborsky J, Feldblyum T, Subbu V, Spiro DJ, Sitz J, Koo H, Bolotov P, Dernovoy D, Tatusova T, Bao Y, St George K, Taylor J, Lipman DJ, Fraser CM, Taubenberger JK, Salzberg SL |title=Large-scale sequencing of human influenza reveals the dynamic nature of viral genome evolution |journal=Nature |volume=437 |issue=7062 |pages=1162–6 |date=October 2005 |pmid=16208317 |doi=10.1038/nature04239|doi-access=free }} (as [http://cbcb.umd.edu/~salzberg/docs/NatureFluGenomeProjectReprint.pdf PDF]</ref> ||
 
|-
 
|-
 
| 2005 || {{w|Influenzavirus A}} ({{w|H5N1}}) || Human, avian || Publication || The {{w|World Health Organization}} publishes its ''WHO guidance on public health measures in countries experiencing their first outbreaks of H5N1 avian influenza''.<ref>{{cite web |title=WHO guidance on public health measures in countries experiencing their first outbreaks of H5N1 avian influenza |url=https://www.who.int/influenza/resources/documents/guidance_publichealthmeasures_h5n1_10_2005/en/ |website=who.int |accessdate=19 May 2020}}</ref> ||
 
| 2005 || {{w|Influenzavirus A}} ({{w|H5N1}}) || Human, avian || Publication || The {{w|World Health Organization}} publishes its ''WHO guidance on public health measures in countries experiencing their first outbreaks of H5N1 avian influenza''.<ref>{{cite web |title=WHO guidance on public health measures in countries experiencing their first outbreaks of H5N1 avian influenza |url=https://www.who.int/influenza/resources/documents/guidance_publichealthmeasures_h5n1_10_2005/en/ |website=who.int |accessdate=19 May 2020}}</ref> ||
Line 337: Line 337:
 
| 2006 || || Human || Website launch || <code>flutracking.net</code> launches in Australia as a weekly web-based survey of influenza-like illness (ILI). It monitors the transmission and severity of ILI across Australia. The survey documents symptoms (cough, fever, and sore throat), time off work or normal duties, influenza vaccination status, laboratory testing for influenza, and health seeking behavior.<ref>{{cite journal |last1=Dalton |first1=Craig |last2=Carlson |first2=Sandra |last3=Butler |first3=Michelle |last4=Cassano |first4=Daniel |last5=Clarke |first5=Stephen |last6=Fejsa |first6=John |last7=Durrheim |first7=David |title=Insights From Flutracking: Thirteen Tips to Growing a Web-Based Participatory Surveillance System |doi=10.2196/publichealth.7333 |pmid=28818817 |url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5579323/ |pmc=5579323}}</ref> || {{w|Australia}}
 
| 2006 || || Human || Website launch || <code>flutracking.net</code> launches in Australia as a weekly web-based survey of influenza-like illness (ILI). It monitors the transmission and severity of ILI across Australia. The survey documents symptoms (cough, fever, and sore throat), time off work or normal duties, influenza vaccination status, laboratory testing for influenza, and health seeking behavior.<ref>{{cite journal |last1=Dalton |first1=Craig |last2=Carlson |first2=Sandra |last3=Butler |first3=Michelle |last4=Cassano |first4=Daniel |last5=Clarke |first5=Stephen |last6=Fejsa |first6=John |last7=Durrheim |first7=David |title=Insights From Flutracking: Thirteen Tips to Growing a Web-Based Participatory Surveillance System |doi=10.2196/publichealth.7333 |pmid=28818817 |url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5579323/ |pmc=5579323}}</ref> || {{w|Australia}}
 
|-
 
|-
| 2006 || || Human || Study || A randomized trial published in the ''{{w|British Medical Journal}}'' shows that even being able to vaccinate half the nursing home staff can prevent half of all deaths during the influenza season.<ref>{{cite web |title=Protecting our elderly: beating flu outbreaks in nursing homes |url=https://theconversation.com/protecting-our-elderly-beating-flu-outbreaks-in-nursing-homes-2960 |website=theconversation.com |accessdate=20 May 2020}}</ref> || {{w|United Kingdom}}
+
| 2006 || || Human || Research (epidemiology) || A randomized trial published in the ''{{w|British Medical Journal}}'' shows that even being able to vaccinate half the nursing home staff can prevent half of all deaths during the influenza season.<ref>{{cite web |title=Protecting our elderly: beating flu outbreaks in nursing homes |url=https://theconversation.com/protecting-our-elderly-beating-flu-outbreaks-in-nursing-homes-2960 |website=theconversation.com |accessdate=20 May 2020}}</ref> || {{w|United Kingdom}}
 
|-
 
|-
 
| 2006 || || Human || Publication || The {{w|World Health Organization}} publishes its ''WHO strategic action plan for pandemic influenza'', a document on global alert and response (GAR).<ref>{{cite web |title=WHO strategic action plan for pandemic influenza |url=https://www.who.int/csr/resources/publications/influenza/WHO_CDS_EPR_GIP_2006_2/en/ |website=who.int |accessdate=19 May 2020}}</ref> || {{w|Switzerland}} ({{w|Geneva}})
 
| 2006 || || Human || Publication || The {{w|World Health Organization}} publishes its ''WHO strategic action plan for pandemic influenza'', a document on global alert and response (GAR).<ref>{{cite web |title=WHO strategic action plan for pandemic influenza |url=https://www.who.int/csr/resources/publications/influenza/WHO_CDS_EPR_GIP_2006_2/en/ |website=who.int |accessdate=19 May 2020}}</ref> || {{w|Switzerland}} ({{w|Geneva}})
Line 347: Line 347:
 
The program would close in 2016.<ref>{{cite web |title=Global Action Plan for Influenza Vaccines (GAP) |url=https://www.who.int/influenza_vaccines_plan/en/ |website=who.int |accessdate=3 May 2020}}</ref>  
 
The program would close in 2016.<ref>{{cite web |title=Global Action Plan for Influenza Vaccines (GAP) |url=https://www.who.int/influenza_vaccines_plan/en/ |website=who.int |accessdate=3 May 2020}}</ref>  
 
||
 
||
 +
|-
 +
| 2006 || || Human || Organization || The {{w|Global action plan for influenza vaccines}} is launched as a 10-year initiative by the {{w|World Health Organization}}, with the purpose to reduce the global shortage and inequitable access to {{w|influenza vaccine}}s in the event of an influenza pandemic.<ref name="saawe">{{cite web |title=4th International Conference on Influenza and Zoonotic Diseases |url=https://influenza.infectiousconferences.com/abstract/2018/global-pandemic-influenza-vaccine-preparedness-progress-under-the-global-action-plan-for-influenza-vaccines-and-next-steps |website=influenza.infectiousconferences.com |accessdate=30 June 2020}}</ref><ref>{{cite web |title=3rd WHO Consultation on Global Action Plan for Influenza Vaccines, November 2016 |url=https://www.who.int/influenza_vaccines_plan/news/gap3_Nov16/en/ |website=who.int |accessdate=30 June 2020}}</ref>
 
|-
 
|-
 
| 2006–2007 || {{w|Influenzavirus A}} ({{w|H3N2}}, {{w|H1N1}}) || Human || Vaccine recommendation || The {{w|World Health Organization}} recommends vaccines to be used in the 2006-7 season (northern hemisphere winter) containing the following:
 
| 2006–2007 || {{w|Influenzavirus A}} ({{w|H3N2}}, {{w|H1N1}}) || Human || Vaccine recommendation || The {{w|World Health Organization}} recommends vaccines to be used in the 2006-7 season (northern hemisphere winter) containing the following:
Line 359: Line 361:
 
| 2007 || {{w|Influenzavirus A}} || Human, avian || Publication || The {{w|World Health Organization}} publishes its guideline ''Avian influenza, including influenza A (H5N1), in humans: WHO interim infection control guideline for health care facilities''.<ref name="Avian influenza: guidelines. recommendations, descriptions"/> ||
 
| 2007 || {{w|Influenzavirus A}} || Human, avian || Publication || The {{w|World Health Organization}} publishes its guideline ''Avian influenza, including influenza A (H5N1), in humans: WHO interim infection control guideline for health care facilities''.<ref name="Avian influenza: guidelines. recommendations, descriptions"/> ||
 
|-
 
|-
| 2007 || {{w|Influenzavirus A}} ({{w|H1N1}}, {{w|H3N2}}, {{w|H1N2}}) || Non-human ([[w:Swine influenza|swine]]) || Study || A study reports that in {{w|swine}}, three influenza A virus subtypes ({{w|H1N1}}, {{w|H3N2}}, and {{w|H1N2}}) are circulating throughout the world.<ref>{{cite journal | last1 = René Gramer | first1 = Marie | last2 = Hoon Lee | first2 = Jee | last3 = Ki Choi | first3 = Young | last4 = Goyal | first4 = Sagar M. | last5 = Soo Joo | first5 = Han | year = 2007 | title = Serologic and genetic characterization of North American H3N2 swine influenza A viruses | url = | journal = Canadian Journal of Veterinary Research | volume = 71 | issue = 3| pages = 201–206 |pmc = 1899866 | pmid=17695595}}</ref> || Worldwide
+
| 2007 || {{w|Influenzavirus A}} ({{w|H1N1}}, {{w|H3N2}}, {{w|H1N2}}) || Non-human ([[w:Swine influenza|swine]]) || Research (virology) || A study reports that in {{w|swine}}, three influenza A virus subtypes ({{w|H1N1}}, {{w|H3N2}}, and {{w|H1N2}}) are circulating throughout the world.<ref>{{cite journal | last1 = René Gramer | first1 = Marie | last2 = Hoon Lee | first2 = Jee | last3 = Ki Choi | first3 = Young | last4 = Goyal | first4 = Sagar M. | last5 = Soo Joo | first5 = Han | year = 2007 | title = Serologic and genetic characterization of North American H3N2 swine influenza A viruses | url = | journal = Canadian Journal of Veterinary Research | volume = 71 | issue = 3| pages = 201–206 |pmc = 1899866 | pmid=17695595}}</ref> || Worldwide
 
|-
 
|-
 
| 2007 || {{w|Influenzavirus A}} ({{w|H3N2}}, {{w|H1N1}}) || Human || Vaccine recommendation || The {{w|World Health Organization}} recommends vaccines to be used in the 2007 season (southern hemisphere winter) containing the following:
 
| 2007 || {{w|Influenzavirus A}} ({{w|H3N2}}, {{w|H1N1}}) || Human || Vaccine recommendation || The {{w|World Health Organization}} recommends vaccines to be used in the 2007 season (southern hemisphere winter) containing the following:
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||                                   
 
||                                   
 
|-
 
|-
| 2008 || || General || Scientific development || Research by the National Institute of Child Health and Human Development (NICHD) finds that the influenza virus has a butter-like coating, which melts when it enters the respiratory tract. In the winter, the coating becomes a hardened shell; therefore, it can survive in the cold weather similar to a spore. In the summer, the coating melts before the virus reaches the respiratory tract.<ref>{{cite journal |author-last1=Polozov |author-first1=I. V. |author-last2=Bezrukov |author-first2=L. |author-last3=Gawrisch |author-first3=K. |author-last4=Zimmerberg |author-first4=J. |title=Progressive ordering with decreasing temperature of the phospholipids of influenza virus |journal={{w|Nature Chemical Biology}} |volume=4 |issue=4 |pages=248–255 |date=2008 |pmid=18311130 |doi=10.1038/nchembio.77 |url=https://zenodo.org/record/1233359}}</ref> ||
+
| 2008 || || General || Research (virology) || Research by the National Institute of Child Health and Human Development (NICHD) finds that the influenza virus has a butter-like coating, which melts when it enters the respiratory tract. In the winter, the coating becomes a hardened shell; therefore, it can survive in the cold weather similar to a spore. In the summer, the coating melts before the virus reaches the respiratory tract.<ref>{{cite journal |author-last1=Polozov |author-first1=I. V. |author-last2=Bezrukov |author-first2=L. |author-last3=Gawrisch |author-first3=K. |author-last4=Zimmerberg |author-first4=J. |title=Progressive ordering with decreasing temperature of the phospholipids of influenza virus |journal={{w|Nature Chemical Biology}} |volume=4 |issue=4 |pages=248–255 |date=2008 |pmid=18311130 |doi=10.1038/nchembio.77 |url=https://zenodo.org/record/1233359}}</ref> ||
 
|-
 
|-
| 2008 || || General || Scientific development ||[[wikipedia:OpenFluDB|OpenFluDB]] is launched as a [[wikipedia:database|database]] for human and animal influenza virus. It's used to collect, manage, store and distribute worldwide data on influenza.<ref>{{cite journal |author=Robin Liechti1, Anne Gleizes, Dmitry Kuznetsov, Lydie Bougueleret, Philippe Le Mercier, Amos Bairoch and Ioannis Xenarios |date= |title=OpenFluDB, a database for human and animal influenza virus |url=http://database.oxfordjournals.org/content/2010/baq004.full |journal= |publisher= |volume= |issue= |pages= |doi= 10.1093/database/baq004 |pmc= |pmid= }}</ref>|| Worldwide  
+
| 2008 || || General || Research (epidemiology) ||[[wikipedia:OpenFluDB|OpenFluDB]] is launched as a [[wikipedia:database|database]] for human and animal influenza virus. It's used to collect, manage, store and distribute worldwide data on influenza.<ref>{{cite journal |author=Robin Liechti1, Anne Gleizes, Dmitry Kuznetsov, Lydie Bougueleret, Philippe Le Mercier, Amos Bairoch and Ioannis Xenarios |date= |title=OpenFluDB, a database for human and animal influenza virus |url=http://database.oxfordjournals.org/content/2010/baq004.full |journal= |publisher= |volume= |issue= |pages= |doi= 10.1093/database/baq004 |pmc= |pmid= }}</ref>|| Worldwide  
 
|-
 
|-
 
| 2008 || || Human || Service launch || [[wikipedia:Google|Google]] launches [[wikipedia:Google Flu Trends|Google Flu Trends]], a web service with aims at providing estimates of influenza activity by aggregating [[wikipedia:Google Search|Google Search]] queries. The system would provide data to 29 countries worldwide, extending service to include surveillance for [[wikipedia:dengue|dengue]].<ref>{{cite web|last1=Butler|first1=Declan|title=When Google got flu wrong|url=http://www.nature.com/news/when-google-got-flu-wrong-1.12413|website=nature.com|accessdate=2 February 2017}}</ref> || [[wikipedia:United States|United States]]   
 
| 2008 || || Human || Service launch || [[wikipedia:Google|Google]] launches [[wikipedia:Google Flu Trends|Google Flu Trends]], a web service with aims at providing estimates of influenza activity by aggregating [[wikipedia:Google Search|Google Search]] queries. The system would provide data to 29 countries worldwide, extending service to include surveillance for [[wikipedia:dengue|dengue]].<ref>{{cite web|last1=Butler|first1=Declan|title=When Google got flu wrong|url=http://www.nature.com/news/when-google-got-flu-wrong-1.12413|website=nature.com|accessdate=2 February 2017}}</ref> || [[wikipedia:United States|United States]]   
Line 417: Line 419:
 
| 2009 (Late April) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Epidemic || The {{w|World Health Organization}} declares its first ever "[[w:PHEIC|public health emergency of international concern]]" (PHEIC) in response to the [[wikipedia:Influenza A virus subtype H1N1|H1N1]] pandemic.<ref>{{cite web|url=http://www.who.int/mediacentre/news/statements/2009/h1n1_20090425/en/|title=WHO—Swine influenza|accessdate=21 May 2020}}</ref> ||
 
| 2009 (Late April) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Epidemic || The {{w|World Health Organization}} declares its first ever "[[w:PHEIC|public health emergency of international concern]]" (PHEIC) in response to the [[wikipedia:Influenza A virus subtype H1N1|H1N1]] pandemic.<ref>{{cite web|url=http://www.who.int/mediacentre/news/statements/2009/h1n1_20090425/en/|title=WHO—Swine influenza|accessdate=21 May 2020}}</ref> ||
 
|-
 
|-
| 2009 (May) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Study || A study at the [[w:United States|U.S.]] {{w|Centers for Disease Control and Prevention}} (CDC) reports that children have no preexisting [[w:immunity (medical)|immunity]] to the new {{w|pandemic H1N1/09 virus}} strain but that adults, particularly those over 60, have some degree of immunity. Children show no [[w:Cross-reactivity|cross-reactive]] {{w|antibody}} reaction to the then-new strain, while adults aged 18 to 64 had 6–9%, and older adults 34%.<ref>{{cite web|url=http://www.cidrap.umn.edu/cidrap/content/influenza/swineflu/news/may2109serum-jw.html|title=Some immunity to novel H1N1 flu found in seniors}}</ref><ref name="CDC_MMWRDispatch_20090421">
+
| 2009 (May) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Research (epidemiology) || A study at the [[w:United States|U.S.]] {{w|Centers for Disease Control and Prevention}} (CDC) reports that children have no preexisting [[w:immunity (medical)|immunity]] to the new {{w|pandemic H1N1/09 virus}} strain but that adults, particularly those over 60, have some degree of immunity. Children show no [[w:Cross-reactivity|cross-reactive]] {{w|antibody}} reaction to the then-new strain, while adults aged 18 to 64 had 6–9%, and older adults 34%.<ref>{{cite web|url=http://www.cidrap.umn.edu/cidrap/content/influenza/swineflu/news/may2109serum-jw.html|title=Some immunity to novel H1N1 flu found in seniors}}</ref><ref name="CDC_MMWRDispatch_20090421">
 
{{cite web
 
{{cite web
 
|publisher={{w|Centers for Disease Control and Prevention}}
 
|publisher={{w|Centers for Disease Control and Prevention}}
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| 2009 (June) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Policy || The {{w|World Health Organization}} and the U.S. {{w|Centers for Disease Control and Prevention}} stop counting cases and declare the H1N1 outbreak a {{w|pandemic}}.<ref name="MargaretChanJune11">{{Cite news|title=World now at the start of 2009 influenza pandemic|last=Chan|first= Margaret|date=11 June 2009|publisher={{w|World Health Organization}} (WHO) url=https://web.archive.org/web/20091022123810/http://www.who.int/mediacentre/news/statements/2009/h1n1_pandemic_phase6_20090611/en/index.html}}</ref> || Worldwide
 
| 2009 (June) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Policy || The {{w|World Health Organization}} and the U.S. {{w|Centers for Disease Control and Prevention}} stop counting cases and declare the H1N1 outbreak a {{w|pandemic}}.<ref name="MargaretChanJune11">{{Cite news|title=World now at the start of 2009 influenza pandemic|last=Chan|first= Margaret|date=11 June 2009|publisher={{w|World Health Organization}} (WHO) url=https://web.archive.org/web/20091022123810/http://www.who.int/mediacentre/news/statements/2009/h1n1_pandemic_phase6_20090611/en/index.html}}</ref> || Worldwide
 
|-
 
|-
| 2009 || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Scientific development || A link between {{w|obesity}} and 2009 H1N1 flu complications is found during the [[w:2009 swine flu pandemic|pandemic]].<ref>{{cite web |title=Study reveals obesity link to seasonal flu hospitalizations |url=https://www.cidrap.umn.edu/news-perspective/2011/08/study-reveals-obesity-link-seasonal-flu-hospitalizations |website=cidrap.umn.edu |accessdate=20 May 2020}}</ref> ||
+
| 2009 || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Research (epidemiology) || A link between {{w|obesity}} and 2009 H1N1 flu complications is found during the [[w:2009 swine flu pandemic|pandemic]].<ref>{{cite web |title=Study reveals obesity link to seasonal flu hospitalizations |url=https://www.cidrap.umn.edu/news-perspective/2011/08/study-reveals-obesity-link-seasonal-flu-hospitalizations |website=cidrap.umn.edu |accessdate=20 May 2020}}</ref> ||
 
|-
 
|-
 
| 2009 || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Publication || The {{w|World Health Organization}} publishes its interim guidance ''Advice on the use of masks in the community setting in Influenza A(H1N1) outbreaks'', which deals with emergencies preparedness and response.<ref>{{cite web |title=Advice on the use of masks in the community setting in Influenza A(H1N1) outbreaks |url=https://www.who.int/csr/resources/publications/swineflu/masks_community/en/ |website=who.int |accessdate=19 May 2020}}</ref> ||
 
| 2009 || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Publication || The {{w|World Health Organization}} publishes its interim guidance ''Advice on the use of masks in the community setting in Influenza A(H1N1) outbreaks'', which deals with emergencies preparedness and response.<ref>{{cite web |title=Advice on the use of masks in the community setting in Influenza A(H1N1) outbreaks |url=https://www.who.int/csr/resources/publications/swineflu/masks_community/en/ |website=who.int |accessdate=19 May 2020}}</ref> ||
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|-
 
|-
 
| 2009 || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Medical development || A few news reports suggest the use of an {{w|elderberry}} ''({{w|Sambucus nigra}})'' extract as a potential preventative against the {{w|2009 flu pandemic}}.<ref>{{cite web|url=http://www.pnj.com/article/20090428/NEWS01/904280328|title=No swine flu cases in state; officials on alert|author=Louis Cooper|date=2009-04-28|publisher=Pensacola News-Journal}}</ref><ref>{{cite web|url=http://www.huffingtonpost.com/matthew-stein/when-a-super-bug-strikes_b_192543.html|title=When a Super-Bug Strikes Close to Home, How Will You Deal With it?|author=Matthew Stein|date=2009-04-28|publisher=Huffington Post}}</ref> ||
 
| 2009 || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Medical development || A few news reports suggest the use of an {{w|elderberry}} ''({{w|Sambucus nigra}})'' extract as a potential preventative against the {{w|2009 flu pandemic}}.<ref>{{cite web|url=http://www.pnj.com/article/20090428/NEWS01/904280328|title=No swine flu cases in state; officials on alert|author=Louis Cooper|date=2009-04-28|publisher=Pensacola News-Journal}}</ref><ref>{{cite web|url=http://www.huffingtonpost.com/matthew-stein/when-a-super-bug-strikes_b_192543.html|title=When a Super-Bug Strikes Close to Home, How Will You Deal With it?|author=Matthew Stein|date=2009-04-28|publisher=Huffington Post}}</ref> ||
 +
|-
 +
| 2009 || || {{w|Influenzavirus A}} ({{w|H17N10}} || Non-human ({{w|bat}}s) || The first bat influenza virus (IAV H17N10) is found in {{w|little yellow-shouldered bat}}s (''Sturnira lilium'') in {{w|Guatemala}}.<ref name="swwa">{{cite web |title=Bat Influenza (Flu) |url=https://www.cdc.gov/flu/other/bat-flu.html |website=cdc.gov |accessdate=30 June 2020}}</ref> || {{w|Guatemala}}
 +
|-
 +
| 2009 || || {{w|Influenzavirus A}} ([[w:Influenza A virus subtype H11N2|H11N2]]) || Non-human ({{w|mallard}}s) || IAV H11N2 is found in sentinel {{w|mallard}}s.<ref>{{cite journal |last1=Wille |first1=Michelle |last2=Latorre-Margalef |first2=Neus |last3=Tolf |first3=Conny |last4=Halpin |first4=Rebecca |last5=Wentworth |first5=David |last6=Fouchier |first6=Ron A M |last7=Raghwani |first7=Jayna |last8=Pybus |first8=Oliver G |last9=Olsen |first9=Björn |last10=Waldenström |first10=Jonas |title=Where do all the subtypes go? Temporal dynamics of H8–H12 influenza A viruses in waterfowl |doi=10.1093/ve/vey025 |url=https://academic.oup.com/ve/article/4/2/vey025/5074428}}</ref> ||
 
|-
 
|-
 
| 2009 (September 15) || {{w|Influenzavirus A}} ({{w|H1N1}} || Human || Vaccine approval || The United States {{w|FDA}} approves four vaccines against the {{w|Influenza A virus subtype H1N1}}.<ref>{{cite web |title=FDA approves Cervarix, GlaxoSmithKline’s cervical cancer vaccine |url=https://www.gsk.com/en-gb/media/press-releases/fda-approves-cervarix-glaxosmithkline-s-cervical-cancer-vaccine/ |website=gsk.com |accessdate=3 June 2020}}</ref><ref>{{cite web |title=Update on Influenza A (H1N1) 2009 Monovalent Vaccines |url=https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5839a3.htm |website=cdc.gov |accessdate=3 June 2020}}</ref> || {{w|United States}}
 
| 2009 (September 15) || {{w|Influenzavirus A}} ({{w|H1N1}} || Human || Vaccine approval || The United States {{w|FDA}} approves four vaccines against the {{w|Influenza A virus subtype H1N1}}.<ref>{{cite web |title=FDA approves Cervarix, GlaxoSmithKline’s cervical cancer vaccine |url=https://www.gsk.com/en-gb/media/press-releases/fda-approves-cervarix-glaxosmithkline-s-cervical-cancer-vaccine/ |website=gsk.com |accessdate=3 June 2020}}</ref><ref>{{cite web |title=Update on Influenza A (H1N1) 2009 Monovalent Vaccines |url=https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5839a3.htm |website=cdc.gov |accessdate=3 June 2020}}</ref> || {{w|United States}}
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| 2009 (October 25) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Epidemic || United States President {{w|Barack Obama}} officially declares {{w|H1N1}} a {{w|national emergency}}.<ref>{{cite web | title=Obama declares swine flu a national emergency | url=http://heraldextra.com/news/national/article_a4de47bf-1dd4-52ea-9f2d-db535ba581b4.html | publisher=The Daily Herald | year=2009 | accessdate=20 May 2020}}</ref> || {{w|United States}}  
 
| 2009 (October 25) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Epidemic || United States President {{w|Barack Obama}} officially declares {{w|H1N1}} a {{w|national emergency}}.<ref>{{cite web | title=Obama declares swine flu a national emergency | url=http://heraldextra.com/news/national/article_a4de47bf-1dd4-52ea-9f2d-db535ba581b4.html | publisher=The Daily Herald | year=2009 | accessdate=20 May 2020}}</ref> || {{w|United States}}  
 
|-
 
|-
| 2009 (November) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Study || A study is published in ''{{w|Virology Journal}}'' suggesting that the {{w|influenza A virus subtype H1N1}} virus may be the product of three strains from three continents that swapped genes in a lab or a vaccine-making plant, and subsequently "escaped". The study follows debate among researchers in May 2009, when the authors asked the {{w|World Health Organization}} to consider the hypothesis. After reviewing the initial paper, WHO and other organizations conclude the pandemic strain is a naturally-occurring virus and not laboratory-derived.<ref>{{cite journal |last1=Gibbs |first1=Adrian J |last2=Armstrong |first2=John S |last3=Downie |first3=Jean C |title=From where did the 2009 'swine-origin' influenza A virus (H1N1) emerge? |journal=Virology Journal |url=https://virologyj.biomedcentral.com/articles/10.1186/1743-422X-6-207 |accessdate=21 May 2020}}</ref> ||
+
| 2009 (November) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Human || Research (virology) || A study is published in ''{{w|Virology Journal}}'' suggesting that the {{w|influenza A virus subtype H1N1}} virus may be the product of three strains from three continents that swapped genes in a lab or a vaccine-making plant, and subsequently "escaped". The study follows debate among researchers in May 2009, when the authors asked the {{w|World Health Organization}} to consider the hypothesis. After reviewing the initial paper, WHO and other organizations conclude the pandemic strain is a naturally-occurring virus and not laboratory-derived.<ref>{{cite journal |last1=Gibbs |first1=Adrian J |last2=Armstrong |first2=John S |last3=Downie |first3=Jean C |title=From where did the 2009 'swine-origin' influenza A virus (H1N1) emerge? |journal=Virology Journal |url=https://virologyj.biomedcentral.com/articles/10.1186/1743-422X-6-207 |accessdate=21 May 2020}}</ref> ||
 
|-
 
|-
 
| 2009 (December) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Non-human (canine) || Infection || The first case of a dog with H1N1 is reported.<ref>{{cite web |title=H1N1 & Animals: New York Dog Confirmed First US H1N1 Canine Case |url=https://www.oregonvma.org/news/h1n1 |website=oregonvma.org |accessdate=21 May 2020}}</ref> || {{w|United States}}
 
| 2009 (December) || {{w|Influenzavirus A}} ({{w|H1N1}}) || Non-human (canine) || Infection || The first case of a dog with H1N1 is reported.<ref>{{cite web |title=H1N1 & Animals: New York Dog Confirmed First US H1N1 Canine Case |url=https://www.oregonvma.org/news/h1n1 |website=oregonvma.org |accessdate=21 May 2020}}</ref> || {{w|United States}}
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| 2011 || {{w|H3N8}} || Non–human || Epizootic || [[wikipedia:Influenza A virus subtype H3N8|Influenza A virus subtype H3N8]] causes death of more than 160 baby [[wikipedia:Pinniped|seals]] in [[wikipedia:New England|New England]].<ref>{{cite journal|last1=Karlsson|first1=Erik A.|last2=Hon|first2=S.|last3=Hall|first3=Jeffrey S.|last4=Yoon|first4=Sun Woo|last5=Johnson|first5=Jordan|last6=Beck|first6=Melinda A.|last7=Webby|first7=Richard J.|last8=Schultz-Cherry|first8=Stacey|title=Respiratory transmission of an avian H3N8 influenza virus isolated from a harbour seal|doi=10.1038/ncomms5791|url=http://www.nature.com/articles/ncomms5791|accessdate=1 February 2017}}</ref> || [[wikipedia:United States|United States]]
 
| 2011 || {{w|H3N8}} || Non–human || Epizootic || [[wikipedia:Influenza A virus subtype H3N8|Influenza A virus subtype H3N8]] causes death of more than 160 baby [[wikipedia:Pinniped|seals]] in [[wikipedia:New England|New England]].<ref>{{cite journal|last1=Karlsson|first1=Erik A.|last2=Hon|first2=S.|last3=Hall|first3=Jeffrey S.|last4=Yoon|first4=Sun Woo|last5=Johnson|first5=Jordan|last6=Beck|first6=Melinda A.|last7=Webby|first7=Richard J.|last8=Schultz-Cherry|first8=Stacey|title=Respiratory transmission of an avian H3N8 influenza virus isolated from a harbour seal|doi=10.1038/ncomms5791|url=http://www.nature.com/articles/ncomms5791|accessdate=1 February 2017}}</ref> || [[wikipedia:United States|United States]]
 
|-
 
|-
| 2011 || {{w|Influenzavirus A}} ({{w|H1N1}}) || General || Scientific development || The Advisers to the WHO Consultation on the Composition of Influenza Vaccines for the Southern Hemisphere 2012, advise [[w:World Health Organization|WHO]] to use the nomenclature: A(H1N1)pdm09 in order to minimize confusion, and to differentiate the virus from the old seasonal A(H1N1) viruses circulating in humans before the pandemic (H1N1) 2009. This standardization would help to minimize potential confusion among the scientific community as well as the general public.<ref>{{cite web |title=Standardization of terminology of the pandemic A(H1N1)2009 virus |url=https://www.who.int/influenza/gisrs_laboratory/terminology_ah1n1pdm09/en/ |website=who.int |accessdate=4 May 2020}}</ref>  
+
| 2011 || {{w|Influenzavirus A}} ({{w|H1N1}}) || General || Recommendation || The Advisers to the WHO Consultation on the Composition of Influenza Vaccines for the Southern Hemisphere 2012, advise [[w:World Health Organization|WHO]] to use the nomenclature: A(H1N1)pdm09 in order to minimize confusion, and to differentiate the virus from the old seasonal A(H1N1) viruses circulating in humans before the pandemic (H1N1) 2009. This standardization would help to minimize potential confusion among the scientific community as well as the general public.<ref>{{cite web |title=Standardization of terminology of the pandemic A(H1N1)2009 virus |url=https://www.who.int/influenza/gisrs_laboratory/terminology_ah1n1pdm09/en/ |website=who.int |accessdate=4 May 2020}}</ref>  
 
||
 
||
 
|-  
 
|-  
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|| {{w|Northern hemisphere}}
 
|| {{w|Northern hemisphere}}
 
|-
 
|-
| 2012 || || || Scientific development || A 2012 [[wikipedia:meta-analysis|meta-analysis]] finds that flu shots are efficacious 67&nbsp;percent of the time.<ref name="Osterholm">{{cite journal|last1=Osterholm|first1=MT|last2=Kelley|first2=NS|last3=Sommer|first3=A|last4=Belongia|first4=EA|title=Efficacy and effectiveness of influenza vaccines: a systematic review and meta-analysis.|journal=The Lancet. Infectious diseases|date=January 2012|volume=12|issue=1|pages=36–44|pmid=22032844|doi=10.1016/s1473-3099(11)70295-x}}</ref>||  
+
| 2012 || || || Research || A 2012 [[wikipedia:meta-analysis|meta-analysis]] finds that flu shots are efficacious 67 percent of the time.<ref name="Osterholm">{{cite journal|last1=Osterholm|first1=MT|last2=Kelley|first2=NS|last3=Sommer|first3=A|last4=Belongia|first4=EA|title=Efficacy and effectiveness of influenza vaccines: a systematic review and meta-analysis.|journal=The Lancet. Infectious diseases|date=January 2012|volume=12|issue=1|pages=36–44|pmid=22032844|doi=10.1016/s1473-3099(11)70295-x}}</ref>||  
 
|-
 
|-
| 2012 || {{w|Influenzavirus A}} ({{w|H5N1}}) || || Scientific development/controversy || American virologists [[wikipedia:Ron Fouchier|Ron Fouchier]] and [[wikipedia:Yoshihiro Kawaoka|Yoshihiro Kawaoka]] intentionally develop a strain based on [[wikipedia:Influenza A virus subtype H5N1|H5N1]] for which no vaccine exists, causing outrage in both the media and scientific community.<ref>{{cite web|url=https://www.theguardian.com/science/2014/jun/11/crazy-dangerous-creation-deadly-airborne-flu-virus|title= Scientists condemn 'crazy, dangerous' creation of deadly airborne flu virus}}</ref><ref>{{cite web|url=http://www.independent.co.uk/news/science/exclusive-controversial-us-scientist-creates-deadly-new-flu-strain-for-pandemic-research-9577088.html|title=Exclusive: Controversial US scientist creates deadly new flu strain for pandemic research}}</ref><ref>{{cite web|url=https://redice.tv/news/u-s-virologists-intentionally-engineer-super-deadly-pandemic-flu-virus|title=U.S. virologists intentionally engineer super-deadly pandemic flu virus}}</ref>|| [[wikipedia:Netherlands|Netherlands]] ([[wikipedia:Erasmus Medical Center|Erasmus Medical Center]]), [[wikipedia:United States|United States]] ([[wikipedia:University of Wisconsin-Madison|University of Wisconsin-Madison]])
+
| 2012 || {{w|Influenzavirus A}} ({{w|H5N1}}) || || Research (virology) || American virologists [[wikipedia:Ron Fouchier|Ron Fouchier]] and [[wikipedia:Yoshihiro Kawaoka|Yoshihiro Kawaoka]] intentionally develop a strain based on [[wikipedia:Influenza A virus subtype H5N1|H5N1]] for which no vaccine exists, causing outrage in both the media and scientific community.<ref>{{cite web|url=https://www.theguardian.com/science/2014/jun/11/crazy-dangerous-creation-deadly-airborne-flu-virus|title= Scientists condemn 'crazy, dangerous' creation of deadly airborne flu virus}}</ref><ref>{{cite web|url=http://www.independent.co.uk/news/science/exclusive-controversial-us-scientist-creates-deadly-new-flu-strain-for-pandemic-research-9577088.html|title=Exclusive: Controversial US scientist creates deadly new flu strain for pandemic research}}</ref><ref>{{cite web|url=https://redice.tv/news/u-s-virologists-intentionally-engineer-super-deadly-pandemic-flu-virus|title=U.S. virologists intentionally engineer super-deadly pandemic flu virus}}</ref>|| [[wikipedia:Netherlands|Netherlands]] ([[wikipedia:Erasmus Medical Center|Erasmus Medical Center]]), [[wikipedia:United States|United States]] ([[wikipedia:University of Wisconsin-Madison|University of Wisconsin-Madison]])
 
|-
 
|-
 
| 2012 (July) || || Human || Publication || The {{w|World Health Organization}} publishes its ''WHO Global Epidemiological Surveillance Standards for Influenza''.<ref>{{cite web |title=WHO Global Epidemiological Surveillance Standards for Influenza |url=https://www.who.int/influenza/resources/documents/influenza_surveillance_manual/en/ |website=who.int |accessdate=20 May 2020}}</ref> ||
 
| 2012 (July) || || Human || Publication || The {{w|World Health Organization}} publishes its ''WHO Global Epidemiological Surveillance Standards for Influenza''.<ref>{{cite web |title=WHO Global Epidemiological Surveillance Standards for Influenza |url=https://www.who.int/influenza/resources/documents/influenza_surveillance_manual/en/ |website=who.int |accessdate=20 May 2020}}</ref> ||
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|-
 
|-
 
| 2013 (August 16) || || Human || Vaccine approval || The U.S. {{w|Food and Drug Administration}} extends FluLaval IIV ({{w|GlaxoSmithKline}}) age range to include children and teens age 3–17 years; licenses quadrivalent FluLaval product.<ref>{{cite journal |last1=Haber |first1=P |last2=Moro |first2=PL |last3=Lewis |first3=P |last4=Woo |first4=EJ |last5=Jankosky |first5=C |last6=Cano |first6=M |title=Post-licensure surveillance of quadrivalent inactivated influenza (IIV4) vaccine in the United States, Vaccine Adverse Event Reporting System (VAERS), July 1, 2013-May 31, 2015. |url=http://europepmc.org/article/PMC/4916262 |doi=10.1016/j.vaccine.2016.03.048 |pmid=27015735 |accessdate=5 June 2020 |pmc=4916262}}</ref> || {{w|United States}}
 
| 2013 (August 16) || || Human || Vaccine approval || The U.S. {{w|Food and Drug Administration}} extends FluLaval IIV ({{w|GlaxoSmithKline}}) age range to include children and teens age 3–17 years; licenses quadrivalent FluLaval product.<ref>{{cite journal |last1=Haber |first1=P |last2=Moro |first2=PL |last3=Lewis |first3=P |last4=Woo |first4=EJ |last5=Jankosky |first5=C |last6=Cano |first6=M |title=Post-licensure surveillance of quadrivalent inactivated influenza (IIV4) vaccine in the United States, Vaccine Adverse Event Reporting System (VAERS), July 1, 2013-May 31, 2015. |url=http://europepmc.org/article/PMC/4916262 |doi=10.1016/j.vaccine.2016.03.048 |pmid=27015735 |accessdate=5 June 2020 |pmc=4916262}}</ref> || {{w|United States}}
 +
|-
 +
| 2013 || || Non-human ({{w|domestic duck}}) || {{w|Influenzavirus A}} ([[Influenza A virus subtype H11N9|H11N9]] || H11N9 was isolated from a domestic duck in live-poultry markets in Eastern China.<ref name="Peng  vv">{{cite journal |last1=Wu |first1=H |last2=Peng |first2=X |last3=Peng |first3=X |last4=Wu |first4=N |s2cid=16942434 |title=Molecular characterization of a reassortant H11N9 subtype avian influenza virus isolated from a domestic duck in Eastern China. |journal=Archives of Virology |year=2015 |volume=160 |issue=10 |pages=2595–2601 |doi=10.1007/s00705-015-2528-6 |pmid=26212362 }}</ref> || {{w|China}}
 
|-
 
|-
 
| 2013 || || Human || Vaccine approval || The U.S. {{w|Food and Drug Administration}} approves influenza vaccine ''Flublok'' ([[wikipedia:Protein Sciences|Protein Sciences]]), developed through recombinant DNA technology.<ref>{{cite web|title=FDA Approves Flublok Quadrivalent Flu Vaccine|url=http://www.medscape.com/viewarticle/870201|website=medscape.com|accessdate=31 May 2018}}</ref> || {{w|United States}}
 
| 2013 || || Human || Vaccine approval || The U.S. {{w|Food and Drug Administration}} approves influenza vaccine ''Flublok'' ([[wikipedia:Protein Sciences|Protein Sciences]]), developed through recombinant DNA technology.<ref>{{cite web|title=FDA Approves Flublok Quadrivalent Flu Vaccine|url=http://www.medscape.com/viewarticle/870201|website=medscape.com|accessdate=31 May 2018}}</ref> || {{w|United States}}
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|| {{w|Southern hemisphere}}
 
|| {{w|Southern hemisphere}}
 
|-
 
|-
| 2016 || {{w|Influenzavirus A}} ({{w|H1N1}}) || Non-human (porcine) || Study || A report by researchers at the [[w:Icahn School of Medicine at Mount Sinai|Mount Sinai School of Medicine]] finds that the 2009 H1N1 virus likely originated from pigs in a very small region of central Mexico.<ref name="swine flu originated in Mexico">{{cite web|url=https://www.sciencedaily.com/releases/2016/06/160627160935.htm|title=2009 swine flu pandemic originated in Mexico, researchers discover|author=|publisher=Science Daily|date=27 June 2016|accessdate=21 May 2020}}</ref> || {{w|Mexico}}, {{w|United States}}
+
| 2016 || {{w|Influenzavirus A}} ({{w|H1N1}}) || Non-human (porcine) || Research (virology) || A report by researchers at the [[w:Icahn School of Medicine at Mount Sinai|Mount Sinai School of Medicine]] finds that the 2009 H1N1 virus likely originated from pigs in a very small region of central Mexico.<ref name="swine flu originated in Mexico">{{cite web|url=https://www.sciencedaily.com/releases/2016/06/160627160935.htm|title=2009 swine flu pandemic originated in Mexico, researchers discover|author=|publisher=Science Daily|date=27 June 2016|accessdate=21 May 2020}}</ref> || {{w|Mexico}}, {{w|United States}}
 
|-
 
|-
 
| 2016 || || Human || Medical development (vaccine) || Vaxigrip Tetra is approved in Europe except for infants younger than three years old.<ref>{{cite web |title=Vaxigrip Tetra |url=https://www.news-medical.net/drugs/Vaxigrip-Tetra.aspx |website=news-medical.net |accessdate=22 May 2020}}</ref> || {{w|Europe}}
 
| 2016 || || Human || Medical development (vaccine) || Vaxigrip Tetra is approved in Europe except for infants younger than three years old.<ref>{{cite web |title=Vaxigrip Tetra |url=https://www.news-medical.net/drugs/Vaxigrip-Tetra.aspx |website=news-medical.net |accessdate=22 May 2020}}</ref> || {{w|Europe}}
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| 2017 || [[w:Influenza A virus subtype H5N6|H5N6]] || Avian || {{w|Epizootic}} || {{w|2017 Central Luzon H5N6 outbreak}}<ref>{{cite web |title=Avian flu here; DA clears out 12,000 quails in Nueva Ecija farm |url=https://businessmirror.com.ph/2020/03/17/avian-flu-here-da-clears-out-12k-quail-farm/ |website=businessmirror.com.ph |accessdate=18 May 2020}}</ref> || {{w|Philippines}}
 
| 2017 || [[w:Influenza A virus subtype H5N6|H5N6]] || Avian || {{w|Epizootic}} || {{w|2017 Central Luzon H5N6 outbreak}}<ref>{{cite web |title=Avian flu here; DA clears out 12,000 quails in Nueva Ecija farm |url=https://businessmirror.com.ph/2020/03/17/avian-flu-here-da-clears-out-12k-quail-farm/ |website=businessmirror.com.ph |accessdate=18 May 2020}}</ref> || {{w|Philippines}}
 
|-
 
|-
| 2017 || || Human || Scientific development || Researchers from the [[wikipedia:University of Helsinki|University of Helsinki]] demonstrate that three anti-influenza compounds effectively inhibit [[wikipedia:zika virus|zika virus]] infection in human cells.<ref>{{cite web|title=Certain anti-influenza compounds also inhibit Zika virus infection, researchers find|url=https://www.sciencedaily.com/releases/2017/01/170116091437.htm|website=sciencedaily.com|accessdate=6 February 2017}}</ref> || [[wikipedia:Finland|Finland]]
+
| 2017 || || Human || Research || Researchers from the [[wikipedia:University of Helsinki|University of Helsinki]] demonstrate that three anti-influenza compounds effectively inhibit [[wikipedia:zika virus|zika virus]] infection in human cells.<ref>{{cite web|title=Certain anti-influenza compounds also inhibit Zika virus infection, researchers find|url=https://www.sciencedaily.com/releases/2017/01/170116091437.htm|website=sciencedaily.com|accessdate=6 February 2017}}</ref> || [[wikipedia:Finland|Finland]]
 
|-
 
|-
 
| 2017 || || Human || Publication || Mieczyslaw Pokorski publishes ''Influenza and Respiratory Care''.<ref>{{cite web |title=Influenza and Respiratory Care |url=https://books.google.com.ar/books/about/Influenza_and_Respiratory_Care.html?id=YyYmDwAAQBAJ&source=kp_book_description&redir_esc=y |website=books.google.com |accessdate=3 May 2020}}</ref> ||
 
| 2017 || || Human || Publication || Mieczyslaw Pokorski publishes ''Influenza and Respiratory Care''.<ref>{{cite web |title=Influenza and Respiratory Care |url=https://books.google.com.ar/books/about/Influenza_and_Respiratory_Care.html?id=YyYmDwAAQBAJ&source=kp_book_description&redir_esc=y |website=books.google.com |accessdate=3 May 2020}}</ref> ||
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| 2018 (January 11) || || Human || Vaccine approval || The U.S. {{w|Food and Drug Administration}} approves expanded pediatric age indication for Fluarix Quadrivalent influenza vaccine."<ref>{{cite web |title=Summary Basis of Regulatory Action |url=https://www.fda.gov/media/110206/download |website=fda.gov |accessdate=2 June 2020}}</ref> || {{w|United States}}
 
| 2018 (January 11) || || Human || Vaccine approval || The U.S. {{w|Food and Drug Administration}} approves expanded pediatric age indication for Fluarix Quadrivalent influenza vaccine."<ref>{{cite web |title=Summary Basis of Regulatory Action |url=https://www.fda.gov/media/110206/download |website=fda.gov |accessdate=2 June 2020}}</ref> || {{w|United States}}
 
|-
 
|-
| 2018 (February) || {{w|Influenzavirus A}}, {{w|influenzavirus B}} || Human || Medical development || Antiviral medication {{w|Xofluza}} ({{w|baloxavir marboxil}}) is approved for sale in {{w|Japan}}.<ref>{{cite press release|url=http://www.publicnow.com/view/7E9FBF87835EEBAC31508CC4E1F96D3D77D54C0A|title=Xofluza (Baloxavir Marboxil) Tablets 10mg/20mg Approved For The Treatment Of Influenza Types A And B In Japan|date=23 February 2018|via=publicnow.com|publisher=[[Shionogi|Shionogi & Co., Ltd.]]}}</ref> || {{w|Japan}}
+
| 2018 (February) || {{w|Influenzavirus A}}, {{w|influenzavirus B}} || Human || Medical development || Antiviral medication {{w|Xofluza}} ({{w|baloxavir marboxil}}) is approved for sale in {{w|Japan}}.<ref>{{cite press release|url=http://www.publicnow.com/view/7E9FBF87835EEBAC31508CC4E1F96D3D77D54C0A|title=Xofluza (Baloxavir Marboxil) Tablets 10mg/20mg Approved For The Treatment Of Influenza Types A And B In Japan|date=23 February 2018|via=publicnow.com|publisher=[[w:Shionogi|Shionogi & Co., Ltd.]]}}</ref> || {{w|Japan}}
 
|-
 
|-
 
| 2018 (June 8) || || Human || Vaccine recommendation || The U.S. {{w|Centers for Disease Control and Prevention}} publishes [[w:Advisory Committee on Immunization Practices|ACIP]]'s recommendations for the use of quadrivalent live attenuated influenza vaccine (LAIV4) in the 2018–19 influenza season."<ref>{{cite web |last1=Grohskopf |first1=Lisa A. |last2=Sokolow |first2=Leslie Z. |last3=Fry |first3=Alicia M. |last4=Walter |first4=Emmanuel B. |last5=Jernigan |first5=Daniel B. |title=Update: ACIP Recommendations for the Use of Quadrivalent Live Attenuated Influenza Vaccine (LAIV4) — United States, 2018–19 Influenza Season |url=https://www.cdc.gov/mmwr/volumes/67/wr/mm6722a5.htm |website=cdc.gov |accessdate=1 June 2020}}</ref> ||
 
| 2018 (June 8) || || Human || Vaccine recommendation || The U.S. {{w|Centers for Disease Control and Prevention}} publishes [[w:Advisory Committee on Immunization Practices|ACIP]]'s recommendations for the use of quadrivalent live attenuated influenza vaccine (LAIV4) in the 2018–19 influenza season."<ref>{{cite web |last1=Grohskopf |first1=Lisa A. |last2=Sokolow |first2=Leslie Z. |last3=Fry |first3=Alicia M. |last4=Walter |first4=Emmanuel B. |last5=Jernigan |first5=Daniel B. |title=Update: ACIP Recommendations for the Use of Quadrivalent Live Attenuated Influenza Vaccine (LAIV4) — United States, 2018–19 Influenza Season |url=https://www.cdc.gov/mmwr/volumes/67/wr/mm6722a5.htm |website=cdc.gov |accessdate=1 June 2020}}</ref> ||
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===What the timeline is still missing===
 
===What the timeline is still missing===
 
+
* {{w|Influenza vaccine}}
 
* [https://www.cdc.gov/flu/about/burden/index.html For visual data]
 
* [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2374803/ For visual data]
 
 
 
 
===Timeline update strategy===
 
===Timeline update strategy===
  

Revision as of 20:56, 30 June 2020

The content on this page is forked from the English Wikipedia page entitled "Timeline of influenza". The original page still exists at Timeline of influenza. The original content was released under the Creative Commons Attribution/Share-Alike License (CC-BY-SA), so this page inherits this license.

This is a timeline of influenza, briefly describing major events such as outbreaks, epidemics, pandemics, discoveries and developments of vaccines. In addition to specific year/period-related events, there's the seasonal flu that kills between 250,000 and 500,000 people every year, and has claimed between 340 million and 1 billion human lives throughout history.[1][2]

Sample questions

The following are some interesting questions that can be answered by reading this timeline:

  • What are some notable outbreaks of influenza recorded throughout history?
    • Sort the full timeline by "Event type" and look for the group of rows with value "Epidemic".
    • You will see oubreaks notable by their magnitude, like big epidemics and pandemics, or by the novelty of the influenza virus strain.
  • What are some notable outbreaks affecting non-human animals?
    • Sort the full timeline by "Event type" and look for the group of rows with value "Epizootic".
  • What are some events describing notable infections on individuals (both human and non-human) that do not develop into epidemics or epizootics?
    • Sort the full timeline by "Event type" and look for the group of rows with value "Infection".
    • You will mainly see the emergence of a specific strain detected in individuals.
  • What are some significant events describing research on influenza in the different fields of science?
    • Sort the full timeline by "Event type" and look for the group of rows with value "Research".
    • For research in virology, look for the group of rows with value "Research (virology)". The same can be applied for research in epidemiology and other fields, clarified between parentheses.
  • What are some significant events describing the medical development progress on treating and preventing influenza?
    • Sort the full timeline by "Event type" and look for the group of rows with value "Medical development".
    • For specific development of vaccines, look for the group of rows with value "Medical development (vaccine)".
  • What are the several influenza vaccine recommendations issued by important organizations?
    • Sort the full timeline by "Event type" and look for the group of rows with value "Vaccine recommendation".
    • You will see a number of recommendations, like those by WHO for both Northern and Southern hemispheres starting from 1998.
  • What are some notable publications authored by experts and/or organizations concerning influenza?
    • Sort the full timeline by "Event type" and look for the group of rows with value "Publication".
    • You will see publications about influenza in different fields, including virology and epidemiology, as well as numerous guidelines produced by the World Health Organization.

Big Picture

Year/period Key developments Details
400 BCE onward Post first description era This period marks the existence of influenza as a disease since its first description by Greek physician Hippocrates.
1510 onward Post first pandemic description era This period begins with the first recognition of pandemic influenza, giving birth to a five centuries period of documented influenza pandemics.
1930s onward Modern medical development era Period marking an accelerating time of scientific and medical development including the discovery of the influenza virus in both non-humans (1931) and humans (1933), as well as the first influenza vaccine (1936). After the end of World War II, international health organizations merge, and large scale vaccination campaigns begin.[3]
21th century Present time Today, worldwide accessible databases multiply in order to control outbreaks and prevent pandemics. New influenza strain outbreaks still occur. Efficacy of currently available vaccines is still insufficient to diminish the current annual health burden induced by the virus.[3]

Visual data

Reported cases of influenza in American countries for the period 1949-1958, illustrating the severity of influenza A virus subtype H2N2 pandemic in 1957. Chile (not shown in the graph) was severely hit and reported 1,408,430 cases in 1957.[4]

Google Trends

The image below shows Google Trends data from 2004 (the start of data availability) to June 2020 (when the screenshot was taken). See local maximums indicating interest peaking in April 2009 (Swine flu pandemic), and March 2020 (COVID-19 pandemic).[5]

Influenza Google Trends.png

Full timeline

Year/period Strain Species Type of event Event Geographical location
400 BCE Medical development The symptoms of human influenza are described by Hippocrates.[6][7]
1173 Epidemic The first epidemic where symptoms are probably influenza, is reported.[8]
1357 Human Medical development The term influenza is first used to describe a disease prevailing in 1357. It would be applied again to the epidemic in 1386−1387.[9] Italy
1386–1387 Human Epidemic Influenza-like illness epidemic develops in Europe, preferentially killing elderly and debilitating persons. This is probably the first documentation of a key epidemiological feature of both pandemic and seasonal influenza.[9] Europe
1411 Human Epidemic Epidemic of coughing disease associated with spontaneous abortions is noted in Paris.[9] France
1510 Human Epidemic Influenza pandemic invades Europe from Africa in the summer of 1510 and proceedes northward to involve all of Europe and then the Baltic States. Attack rates are extremely high, but fatality is low and said to be restricted to young children.[9] This is the first recognition of pandemic influenza.[10] Africa, Europe
1557–1558 Human Epidemic The first influenza pandemic in which global involvement and westward spread from Asia to Europe is documented. Unlike the previous pandemic from 1510, this one is highly fatal, with deaths recorded as being due to "pleurisy and fatal peripneumony". High mortality in pregnant women is also recorded.[9] Eurasia
1580 Human Epidemic Influenza pandemic originates in Asia during the summer, spreading to Africa, and then to Europe along two corridors from Asia Minor and North-West Africa. Illness rates are high. 8000 deaths are reported in Rome, and some Spanish cities are decimated.[8][9] Eurasia, Africa
1729 Human Epidemic Influenza pandemic originates in Russia, spreading westwards in expanding waves to embrace all Europe within six months. High death rates are reported.[11][8][9] Eurasia
1761–1762 Human Epidemic Influenza pandemic originates. Remarkably it is estimated to have begun in the Americas in the spring of 1761 and to have spread from there to Europe and around the globe in 1762. It is the first pandemic to be studied by multiple observers who communicate with each other in learned societies and through medical journals and books. Influenza is characterized clinically to a greater degree than it has been previously, as physicians carefully record observations on series of patients and attempt to understand what would later be called the pathophysiology of the disease.[9] Americas, Europe
1780–1782 Human Epidemic Influenza pandemic originates in Southeast Asia and spreads to Russia and eastward into Europe. It is remarkable for extremely high attack rates but negligible mortality. It appears that in this pandemic the concept of influenza as a distinct entity with characteristic epidemiological features is first appreciated.[9] Eurasia
1830–1833 Human Epidemic Influenza pandemic breaks out in the winter of 1830 in China, further spreading southwards by sea to reach the Philippines, India and Indonesia, and across Russia into Europe. By 1831, the epidemic reaches the Americas. Overall the attack rate is estimated at 20–25% of the population, but the mortality rate is not exceptionally high.[8] Eurasia, Americas
1878 Non-human (Avian) Research Avian influenza is recorded for the first time. Originally known as Fowl Plague.[12] Italy
1889–1892 H3N8?[13] H2N2?[14][15] Human Epidemic 1889–90 flu pandemic. Dubbed the "Russian pandemic". Attack rates are reported in 408 geographic entities from 14 European countries and in the United States. Rapidly spreading, the pandemic would take only 4 months to circumnavigate the planet, reaching the United States 70 days after the original outbreak in Saint Petersburg.[16] Following this pandemic, interest is renewed in examining the recurrence patterns of influenza.[9] Eurasia, Americas
1901 Non-human (Avian) Research The causative organism of avian influenza is discovered to be a virus.[17]
1918-1920 Influenzavirus A (H1N1) Human Epidemic The Spanish flu (H1N1) pandemic is considered one of the deadliest natural disasters ever, infecting an estimated 500 million people across the globe and claiming between 50 and 100 million lives. This pandemic would be described as "the greatest medical holocaust in history" and is estimated to have killed in a single year more people than the Black Death bubonic plague killed in four years from 1347 to 1351.[18][19] Worldwide; originated in France (disputed)
1931 Non-human (porcine) Research The real cause of the flu, the Influenza Virus, is discovered by American virologist Richard Shope[20], who finds the etiological cause of influenza in pigs.[21] United States
1933 Human Research British researchers Wilson Smith, Christopher Andrews, and Patrick Laidlaw are the first to identify the human flu virus by experimenting with ferrets.[22][23][24] United Kingdom
1936 Human Medical development (vaccine) Soviet scientist A. Smorodintseff conducts the first attempt of a vaccination with a live influenza vaccine that has been passed about 30-times in eggs. Smorodintseff would later report that the modified virus causes only a barely perceptible, slight fever and that subjects are protected against reinfection.[25][26] Russia
1942 Influenzavirus B Human Medical development (vaccine) Bivalent vaccine is produced after the discovery of influenza B.[24]
1945 Human Medical development (vaccine) The first license to produce an influenza vaccine for civilian use is granted in the United States.[27] United States
1946 Organization The Centers for Disease Control and Prevention (CDC) is established by the U.S. Department of Health and Human Services in order to protect public health and safety through the control and prevention of diseases. The CDC would launch campaigns targeting the transmission of influenza.[28][29] United States (Atlanta)
1947 Organization The World Medical Association (WMA) is formed as an international confederation of free professional medical associations. Like CDC, the WMA would launch Influenza Immunization Campaigns.[30] France (serves worldwide)
1948 Organization The World Health Organization (WHO) is established.[31]
1952 Organization (Research institute) The Global Influenza Surveillance and Response System (GISRS) is established by the WHO with the purpose of conducting global influenza virological surveillance. GISRS monitors the evolution of influenza viruses and provides recommendations in areas including laboratory diagnostics, vaccines, antiviral susceptibility and risk assessment. It also serves as a global alert mechanism for the emergence of influenza viruses with pandemic potential.[32]
1956 Non-human (equine) Research Viruses that cause equine influenza are first isolated.[33]
1957 H2N2 Human Epidemic New, virulent influenza A virus subtype H2N2 breaks out in Guizhou (China). It would turn into pandemic (category 2) and kill 1 to 4 million people.[34] It is considered the second major influenza pandemic to occur in the 20th century, after the Spanish flu.[35][9] China
1959 H5N1 Non–human (avian) Epizootic Influenza A virus subtype H5N1 breaks out in Scotland and affects domestic chicken.[36] United Kingdom
1961 H5N1 Non–human (avian) Epizootic Avian Influenza A virus subtype H5N1 strain is found in birds in South Africa.[37][38] South Africa
1963 H7N3 Non–human (avian) Epizootic Influenza A virus subtype H7N3 breaks out in England and affects domestic turkeys.[36] United Kingdom
1966 H5N9 Non–human (avian) Epizootic Influenza A virus subtype H5N9 breaks out in Ontario and affects domestic turkeys.[36] Canada
1966 Medical development The activity of N-acetylcysteine (NAC) against influenza is first suggested.[39]
1968 Human Research Study of 1,900 male cadets after the 1968 Hong Kong A2 influenza epidemic at a South Carolina military academy, compares three groups: nonsmokers, heavy smokers, and light smokers. Compared with nonsmokers, heavy smokers (more than 20 cigarettes per day) had 21% more illnesses and 20% more bed rest, light smokers (20 cigarettes or fewer per day) had 10% more illnesses and 7% more bed rest.[40] United States
1968-1969 H3N2 Human Epidemic Hong Kong flu (H3N2) pandemic breaks out, caused by a virus that has been “updated” from the previously circulating virus by reassortment of avian genes.[9][41] Eurasia, North America
1973 Human Program launch The World Health Organization starts issuing annual recommendations for the composition of the influenza vaccine based on results from surveillance systems that would identify currently circulating strains.[24]
1976 Influenzavirus A (H1N1) Human Epidemic Swine flu outbreak is identified at U.S. army base in Fort Dix, New Jersey. Four soldiers infected resulting in one death. To prevent a major pandemic, the United States launches a vaccination campaign.[42][43] United States (New Jersey)
1976 H7N7 Non–human (avian) Epizootic Influenza A virus subtype H7N7 breaks out in Victoria (Australia) and affects domestic chicken.[36] Australia
1976 Influenzavirus A Human Medical development Symmetrel (amantadine) is approved by the United States Food and Drug Administration for preventing and treating infection caused by influenzavirus A.[44] United States
1977 Influenzavirus A (H1N1) Human Epidemic Russian flu (H1N1) epidemic. New influenza strain in humans. Isolated in northern China. A similar strain prevalent in 1947–57 causes most adults to have substantial immunity. This outbreak is not considered a pandemic because most patients are children.[43][45][46][47] Russia, China, worldwide
1978 Influenzavirus A, influenzavirus B Human Medical development (vaccine) The first trivalent influenza vaccine is introduced. It includes two influenza A strains and one influenza B strain.[24]
1979 Human Research Surveillance of an influenza outbreak at a military base for women in Israel reveals that influenza symptoms developed in 60.0% of the current smokers vs. 41.6% of the nonsmokers.[48] Israel
1980 Influenzavirus A, Influenzavirus B Human Medical development (vaccine) United States FDA approves influenza vaccine Fluzone (Sanofi Pasteur), developed for A subtype viruses and type B virus contained in the vaccine.[49] United States
1982 Human Research Study concludes that smoking may substantially contribute to the growth of influenza epidemics affecting the entire population.[50]
1983 H5N8 Non–human (avian) Epizootic Avian Influenza A virus subtype H5N8 breaks out. 8,000 turkeys, 28,020 chickens, and 270,000 ducks are slaughtered.[51][38] Ireland
1986 Publication Medical geographer Gerald F. Pyle publishes The Diffusion of Influenza.[52]
1988 Influenzavirus A (H1N2) Human Infection Influenza A virus subtype H1N2 is isolated from humans in six cities in China, but the virus does not spread further.[53] China
1990 Influenzavirus A, influenzavirus B Human Medical development Relenza (zanamivir) is first licensed to GlaxoSmithKline.[54]
1990-1996 Human Medical development Oseltamivir (often referenced by its trademark name Tamiflu) is developed by Gilead Sciences, using shikimic acid for synthesis. It would be widely used in further antiviral campaigns targeting influenza A and B. Included on the World Health Organization's List of Essential Medicines.[55] United States
1993 Human Research In a prospective study of community-dwelling people 60–90 years of age, it is found that 23% of smokers have clinical influenza as compared with 6% of non-smokers.[56]
1993 Influenzavirus A Human Medical development Flumadine (rimantadine) is approved by the United States Food and Drug Administration for preventing and treating infection caused by influenzavirus A.[44] United States
1997 Influenzavirus A (H5N1) Human Infection Highly pathogenic avian influenza (HPAI) H5N1 (also known as bird flu) is discovered in humans. The first time an influenza virus is found to be transmitted directly from birds to people. Eighteen people hospitalized, six of whom die. Hong Kong kills its entire poultry population of about 1.5 million birds. No pandemic develops.[57] China (Hong Kong)
1997 H7N4 Avian Epizootic Highly pathogenic Influenza A virus subtype H7N4 strain causes a minor flu outbreak in chicken in Australia.[58] Australia
1997 Human System launch FluNet is launched as a global web-based tool for influenza virological surveillance.[59]
1997 Human Medical development A randomized clinical trial finds that volunteers taking 1.2 grams of N-acetylcysteine daily for six months are as likely as those taking placebo to be infected by influenza, but only 25% of them experience clinical symptoms, as contrasted with 67% of the control group. The authors conclude that resistance to flu symptoms is associated with a shift in cell mediated immunity from anergy toward normoergy, as measured by the degree of skin reactivity to seven common antigens such as tetanus and Candida albicans.[60]
1998–1999 (November 1998–April 1999) Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 1998-1999 season containing the following:
  • an A/Sydney/5/97(H3N2)-like virus;
  • an A/Beijing/262/95(H1N1)-like virus;
  • a B/Beijing/184/93-like virus.[61]
Northern hemisphere
1999 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 1999 season (southern hemisphere winter) containing the following:
  • an A/Sydney/5/97 (H3N2)-like virus;
  • an A/Beijing/262/95 (H1N1)-like virus;
  • a B/Beijing/184/93-like virus.[62]
Southern hemisphere
1999 Influenzavirus A (H9N2) Human Infection New Influenza A virus subtype H9N2 strain is detected in humans. It causes illness in two children in Hong Kong, with poultry being the probable source. No pandemic develops.[43][38] China (Hong Kong)
1999 Influenzavirus A, influenzavirus B Human Medical development Tamiflu (Oseltamivir) is approved for medical use in the United States.[63] United States
1999–2000 (November 1999 to April 2000) Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 1999-2000 season contain the following:
  • an A/Sydney/5/97 (H3N2)-like virus;
  • an A/Beijing/262/95 (H1N1)-like virus; and
  • a B/Beijing/184/93-like virus or a B/Shangdong/7/97-like virus.[64]
2000 Human Alternative medicine Homeopathic preparation Oscillococcinum becomes one of the top ten selling drugs in France, is publicised widely in the media, and becomes widely prescribed for both influenza and the common cold.[65] France
2000 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2000 season (southern hemisphere winter) contain the following:
  • an A/Moscow/10/99 (H3N2)-like virus;
  • an A/New Caledonia/20/99 (H1N1)-like virus;
  • a B/Beijing/184/93-like virus.[66]
Southern hemisphere
2000–2001 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2000-2001 season (northern hemisphere winter) containing the following:
  • an A/Moscow/10/99 (H3N2)-like virus;
  • an A/New Caledonia/20/99 (H1N1)-like virus;
  • a B/Beijing/184/93-like virus.[67]
Northern hemisphere
2001 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2001 season (southern hemisphere winter) containing the following:
  • an A/Moscow/10/99 (H3N2)-like virus;
  • an A/New Caledonia/20/99 (H1N1)-like virus;
  • a B/Sichuan/379/99-like virus.[68]
Southern hemisphere
2001–2002 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2001-2002 season (northern hemisphere winter) containing the following:
  • an A/New Caledonia/20/99(H1N1)-like virus;
  • an A/Moscow/10/99(H3N2)-like virus; and
  • a B/Sichuan/379/99-like virus.[69]
2002 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2002 season (southern hemisphere winter) containing the following:
  • an A/New Caledonia/20/99(H1N1)-like virus;
  • an A/Moscow/10/99(H3N2)-like virus;
  • a B/Sichuan/379/99-like virus.[70]
Southern hemisphere
2002 Influenzavirus A, Influenzavirus B Human Medical development High dietary intake of green tea is correlated with reduced risk of contracting influenza, as well as having an antiviral effect upon types A and B.[71]
2002 H7N2 Non-human (avian) Epizootic New avian influenza A virus subtype H7N2 strain affects 197 farms in Virginia and results in the killing of over 4.7 million birds. One person is infected, fully recovered.[72][38] United States
2002–2003 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2002-2003 season (Northern Hemisphere winter) containing the following:
  • an A/New Caledonia/20/99(H1N1)-like virus;
  • an A/Moscow/10/99(H3N2)-like virus; and
  • a B/Hong Kong/330/2001-like virus.[73]
Northern hemisphere
2003 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2003 season (southern hemisphere winter) containing the following:
  • an A/New Caledonia/20/99(H1N1)-like virus;
  • an A/Moscow/10/99(H3N2)-like virus; and
  • a B/Hong Kong/330/2001-like virus.[74]
Southern hemisphere
2003 Human System launch Influenzanet launches in the Netherlands and Belgium as a participatory surveillance system monitoring the incidence of influenza-like illness in Europe. It is based on data provided by volunteers who self-report their symptoms via the Internet throughout the influenza season.[75][76] Netherlands, Belgium
2003 Human Medical development The mixture of Eleutherococcus senticosus ("Siberian ginseng") and Andrographis paniculata, sold under the trade name Kan Jang, is reported in the Journal of Herbal Pharmacotherapy to outperform amantadine in reducing influenza-related sick time and complications in a Volgograd pilot study of 71 patients.[77] Russia
2003 Vaccine approval The United States FDA first licenses FluMist –an intranasally administered influenza vaccine, for healthy, nonpregnant persons aged 5–49 years.[78] United States
2003 H7N7 Human, avian Epidemic, epizootic First reported case of avian influenza A virus subtype H7N7 strain in humans. 88 people are infected, one dies. 30 million birds are slaughtered.[79][38] Netherlands
2003–2004 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2003-2004 season (northern hemisphere winter) containing the following:
  • an A/New Caledonia/20/99(H1N1)-like virus;
  • an A/Moscow/10/99(H3N2)-like virus; and
  • a B/Hong Kong/330/2001-like virus.[80]
2003–2007 Influenzavirus A (H5N1) Human, avian Epidemic, epizootic Avian (Influenza A virus subtype H5N1) strain is reported in humans. In February 2003, two people are infected in Hong Kong, one dies. In December 2003, H5N1 breaks out among chicken in South Korea. By January 2004, Japan has its first outbreak of avian flu since 1925 and Vietnam reports human cases. In Thailand, nine million chickens are slaughtered to stop the spread of the disease.[38] By December 2006, over 240 million poultry would die or be culled due to H5N1.[81] East Asia, Southeast Asia
2004 Influenzavirus A (H5N1) Human Publication The World Health Organizatin publishes its Guidelines for the use of seasonal influenza vaccine in humans at risk of H5N1 infection.[82]
2004 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2004 season (southern hemisphere winter) containing the following:
  • an A/New Caledonia/20/99(H1N1) -like virus;
  • an A/Fujian/411/2002(H3N2) - like virus; and
  • a B/Hong Kong/330/2001-like virus.[83]
2004 Human Organization The Influenza Genome Sequencing Project is launched to investigate influenza evolution by providing a public data set of complete influenza genome sequences from collections of isolates representing diverse species distributions. Funded by the NIAID.[84]
2004 Human Publication The World Health Organizatin publishes its guideline Advice for people living in areas affected by bird flu or avian influenza.[82]
2004 H7N3 Human Infection New avian Influenza A virus subtype H7N3 strain is detected in humans. Two poultry workers become infected, eventually fully recovered.[85][38] Canada
2004 Influenzavirus A (H10N7) Human Infection New avian influenza A virus subtype H10N7 strain is detected in humans. Two children become infected.[86][38] Egypt
2004 Influenzavirus A H5N2 Non–human (avian) Epizootic Avian influenza A virus subtype H5N2 infects birds in Texas. 6,600 infected broiler chickens are slaughtered.[87][38] United States
2004 H3N8 Non-human (Canidae) Research Canine influenza (dog flu) virus subtype H3N8, is discovered to cause disease in canines.[88] United States
2004–2005 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2004-2005 northern hemisphere influenza season containing the following:
  • an A/New Caledonia/20/99(H1N1)-like virus;
  • an A/Fujian/411/2002(H3N2)-like virus; and
  • a B/Shanghai/361/2002-like virus.[89]
Northern hemisphere
2005 Human Organization United States President George W. Bush unveils the National Strategy to Safeguard Against the Danger of Pandemic Influenza. US$1 billion for the production and stockpile of oseltamivir are requested after Congress approves $1.8 billion for military use of the drug.[90][91] United States
2005 Human Publication The World Health Organization publishes its guideline Clarification on the use of masks by health-care workers in pandemic settings - in WHO global influenza preparedness plan.[82]
2005 General Organization American president George W. Bush announces the International Partnership on Avian and Pandemic Influenza. The purpose of the partnership is protecting human and animal health as well as mitigating the global socioeconomic and security consequences of an influenza pandemic.[92][93] United States (New York City)
2005 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2005 season (southern hemisphere winter) containing the following:
  • an A/New Caledonia/20/99(H1N1)-like virus;
  • an A/Wellington/1/2004(H3N2)-like virus; and
  • a B/Shanghai/361/2002-like virus.[94]
2005 General Research (genomics) New technology development led by Elodie Ghedin at The Institute for Genomic Research is first published at journal Nature describing over 100 influenza genomes.[95]
2005 Influenzavirus A (H5N1) Human, avian Publication The World Health Organization publishes its WHO guidance on public health measures in countries experiencing their first outbreaks of H5N1 avian influenza.[96]
2005 (August) Influenzavirus A H5N3 Non-human (avian) Infection Influenza A virus subtype H5N3 is identified in Quebec.[97] Canada
2005 H1N1 Human, avian Infection Avian influenza A virus subtype H1N1 strain kills one person in Cambodia. In Romania, a village is quarantined after three dead ducks test positive for H1N1.[98][38] Cambodia, Romania
2005 (Ocober) Influenzavirus A H5N3 Non-human (avian) Infection Influenza A virus subtype H5N3 is identified in Sweden.[99] Sweden
2005 (November) Influenzavirus A H5N2 Non-human (falcon) Infection It is reported that a falcon was found to have H5N2.[100]
2005–2006 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2005-2006 influenza season (northern hemisphere winter) containing the following:

A trivalent vaccine containing:

  • an A/New Caledonia/20/99(H1N1)-like virus;
  • an A/California/7/2004(H3N2)-like virus;
  • a B/Shanghai/361/2002-like virus.[101]
Northern hemisphere
2006 Human Publication The World Health Organization publishes its guideline Avian influenza: food safety issues.[102][103]
2006 (May) Influenzavirus A (H5N1) Human Publication The World Health Organization publishes its WHO Rapid Advice Guidelines on pharmacological management of humans infected with avian influenza A (H5N1) virus.[104]
2006 Human, avian Organization The International Pledging Conference on Avian and Human Pandemic Influenza is held Beijing. Co-hosted by the Chinese Government, the European Commission and the World Bank. The purpose is to raise funds for international cooperation in the prevention and control of avian and human influenza.[105] China (Beijing)
2006 Human Website launch FluTrackers (flutrackers.com launches as a website, online forum and early warning system which tracks and gathers information relating to a wide range of infectious diseases, including flu and assists in how to use it to inform the general public.[106]
2006 Human Website launch flutracking.net launches in Australia as a weekly web-based survey of influenza-like illness (ILI). It monitors the transmission and severity of ILI across Australia. The survey documents symptoms (cough, fever, and sore throat), time off work or normal duties, influenza vaccination status, laboratory testing for influenza, and health seeking behavior.[107] Australia
2006 Human Research (epidemiology) A randomized trial published in the British Medical Journal shows that even being able to vaccinate half the nursing home staff can prevent half of all deaths during the influenza season.[108] United Kingdom
2006 Human Publication The World Health Organization publishes its WHO strategic action plan for pandemic influenza, a document on global alert and response (GAR).[109] Switzerland (Geneva)
2006 Human Program launch The Global Action Plan for Influenza Vaccines (GAP) launches as a strategy to reduce the global shortage of influenza vaccines for seasonal epidemics and pandemic influenza in all countries of the world through three major approaches:

The program would close in 2016.[110]

2006 Human Organization The Global action plan for influenza vaccines is launched as a 10-year initiative by the World Health Organization, with the purpose to reduce the global shortage and inequitable access to influenza vaccines in the event of an influenza pandemic.[111][112]
2006–2007 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2006-7 season (northern hemisphere winter) containing the following:
  • an A/New Caledonia/20/99(H1N1)-like virus;
  • an A/Wisconsin/67/2005 (H3N2)-like virus;
  • a B/Malaysia/2506/2004-like virus.[113]
Northern hemisphere
2007 Non-human (equine) Epizootic Equine influenza outbreak is diagnosed in Australia's horse population following the failure to contain infection in quarantine after the importation of one or more infected horses. The outbreak would also have a major impact on individual horse owners, the horse industry and associated sectors in both infected and uninfected states.[114] Australia
2007 Influenzavirus A Human, avian Publication The World Health Organization publishes its guideline Avian influenza, including influenza A (H5N1), in humans: WHO interim infection control guideline for health care facilities.[82]
2007 Influenzavirus A (H1N1, H3N2, H1N2) Non-human (swine) Research (virology) A study reports that in swine, three influenza A virus subtypes (H1N1, H3N2, and H1N2) are circulating throughout the world.[115] Worldwide
2007 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2007 season (southern hemisphere winter) containing the following:
  • an A/New Caledonia/20/99(H1N1)-like virus;
  • an A/Wisconsin/67/2005(H3N2)-like virus;
  • a B/Malaysia/2506/2004-like virus.[116]
Southern hemisphere
2007–2008 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2007-8 season (northern hemisphere winter) containing the following:
  • an A/Solomon Islands/3/2006 (H1N1)-like virus;
  • an A/Wisconsin/67/2005 (H3N2)-like virus; and
  • a B/Malaysia/2506/2004-like virus.[117]
Northern hemisphere
2008 Human Publication The World Health Organization publishes its guideline Pandemic influenza preparedness and mitigation in refugee and displaced populations.[118]
2008 Program launch The GISAID initiative (Global initiative on sharing all influenza data) launches as a public–private partnership between the German government and the nonprofit organization Friends of GISAID that provides public access to a collection of genetic sequence data of influenza viruses and related clinical and epidemiological data through its database (named EpiFlu).[119] Germany
2008 Human, avian Publication The World Health Organization publishes its guideline Aide-Memoire -Infection control recommendations for avian influenza in health-care facilities.[82]
2008 Influenzavirus A (H5N1) Human Publication The World Health Organization publishes its guideline Protection of individuals with high poultry contact in areas affected by avian influenza H5N1: Consolidation of pre-existing guidance.[120]
2008 Human Publication Roni K. Devlin publishes Influenza (Biographies of Disease). The book covers influenza as a disease with potential of being at the center of a new pandemic.[121]
2008 Human Publication Antivirals for Pandemic Influenza: Guidance on Developing a Distribution and Dispensing Program is published by the U.S. Institute of Medicine.[122] United States
2008 Influenzavirus A (H5N1) and others Human, avian Publication Avian Influenza, by Hans-Dieter Klenk, Mikhail N. Matrosovich, and Jürgen Stech, is published. It provides information about the ecology and epidemiology of avian influenza with particular emphasis on recent H5N1 outbreaks in China, Siberia and Europe.[123]
2008 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2008 season (southern hemisphere winter) containing the following:
  • an A/Solomon Islands/3/2006 (H1N1)-like virus;
  • an A/Brisbane/10/2007 (H3N2)-like virus;
  • a B/Florida/4/2006-like virus.[124]
2008 General Research (virology) Research by the National Institute of Child Health and Human Development (NICHD) finds that the influenza virus has a butter-like coating, which melts when it enters the respiratory tract. In the winter, the coating becomes a hardened shell; therefore, it can survive in the cold weather similar to a spore. In the summer, the coating melts before the virus reaches the respiratory tract.[125]
2008 General Research (epidemiology) OpenFluDB is launched as a database for human and animal influenza virus. It's used to collect, manage, store and distribute worldwide data on influenza.[126] Worldwide
2008 Human Service launch Google launches Google Flu Trends, a web service with aims at providing estimates of influenza activity by aggregating Google Search queries. The system would provide data to 29 countries worldwide, extending service to include surveillance for dengue.[127] United States
2008–2009 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2008-2009 influenza season (northern hemisphere winter) containing the following:
  • an A/Brisbane/59/2007 (H1N1)-like virus;
  • an A/Brisbane/10/2007 (H3N2)-like virus; and
  • a B/Florida/4/2006-like virus.[128]
Northern hemisphere
2009 (January) Influenzavirus A H5N3 Non-human (avian) Epizootic Influenza A virus subtype H5N3 is identified at a La Garnache farm in France. 90 birds are found dead between 29 January 2009 and 31 January 2009. The remaining stock of 4,932 birds are culled on 1 February 2009.[129][130] France
2009 Influenzavirus A (H1N1) Human Epidemic New flu virus (H1N1) pandemic (colloquially called the swine flu pandemic), first recognized in the state of Veracruz, Mexico, spreads quickly across the United States and the world, prompting a strong global public reaction. Overseas flights are discouraged from government health bodies.[131] Worldwide, nearly 1 billion doses of H1N1 vaccine are ordered.[132] A total of 74 countries are affected. 18,500 deaths.[43] Worldwide
2009 (April 27) Influenzavirus A (H1N1) Human Policy The United States Food and Drug Administration issues Emergency Use Authorizations to make available Relenza and Tamiflu antiviral drugs to treat the swine influenza virus in cases for which they were currently unapproved. The agency issues these EUAs to allow treatment of patients younger than the current approval allows and to allow the widespread distribution of the drugs, including by volunteers.[133] United States
2009 (Late April) Influenzavirus A (H1N1) Human Epidemic The World Health Organization declares its first ever "public health emergency of international concern" (PHEIC) in response to the H1N1 pandemic.[134]
2009 (May) Influenzavirus A (H1N1) Human Research (epidemiology) A study at the U.S. Centers for Disease Control and Prevention (CDC) reports that children have no preexisting immunity to the new pandemic H1N1/09 virus strain but that adults, particularly those over 60, have some degree of immunity. Children show no cross-reactive antibody reaction to the then-new strain, while adults aged 18 to 64 had 6–9%, and older adults 34%.[135][136] United States
2009 (May 22) Influenzavirus A (H1N1) Human Vaccine funding The United States Department of Health and Human Services directs US$1 billion toward development of vaccine for novel influenza A (H1N1).[137] United States
2009 (June) Influenzavirus A (H1N1) Human Policy The World Health Organization and the U.S. Centers for Disease Control and Prevention stop counting cases and declare the H1N1 outbreak a pandemic.[138] Worldwide
2009 Influenzavirus A (H1N1) Human Research (epidemiology) A link between obesity and 2009 H1N1 flu complications is found during the pandemic.[139]
2009 Influenzavirus A (H1N1) Human Publication The World Health Organization publishes its interim guidance Advice on the use of masks in the community setting in Influenza A(H1N1) outbreaks, which deals with emergencies preparedness and response.[140]
2009 Influenzavirus A H1N1 Human Statistics It is estimated that in the 2009 flu pandemic 11–21% of the then global population (of about 6.8 billion), or around 700 million to 1.4 billion people, contracted the illness—more in absolute terms than the Spanish flu pandemic. Calculated fatalities range between 12,000 and 18,000.[141][142] Worldwide
2009 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2009 influenza season (southern hemisphere winter) containing the following:
  • an A/Brisbane/59/2007 (H1N1)-like virus;
  • an A/Brisbane/10/2007 (H3N2)-like virus; and
  • a B/Florida/4/2006-like virus.[143]
Southern hemisphere
2009 Influenzavirus A (H1N1) Human Medical development A few news reports suggest the use of an elderberry (Sambucus nigra) extract as a potential preventative against the 2009 flu pandemic.[144][145]
2009 Influenzavirus A (H17N10 Non-human (bats) The first bat influenza virus (IAV H17N10) is found in little yellow-shouldered bats (Sturnira lilium) in Guatemala.[146] Guatemala
2009 Influenzavirus A (H11N2) Non-human (mallards) IAV H11N2 is found in sentinel mallards.[147]
2009 (September 15) Influenzavirus A (H1N1 Human Vaccine approval The United States FDA approves four vaccines against the Influenza A virus subtype H1N1.[148][149] United States
2009 (October) Influenzavirus A (H1N1) Human Medical development It is reported that the experimental antiviral drug Peramivir has been effective in treating serious cases of swine flu.[150]
2009 (October 25) Influenzavirus A (H1N1) Human Epidemic United States President Barack Obama officially declares H1N1 a national emergency.[151] United States
2009 (November) Influenzavirus A (H1N1) Human Research (virology) A study is published in Virology Journal suggesting that the influenza A virus subtype H1N1 virus may be the product of three strains from three continents that swapped genes in a lab or a vaccine-making plant, and subsequently "escaped". The study follows debate among researchers in May 2009, when the authors asked the World Health Organization to consider the hypothesis. After reviewing the initial paper, WHO and other organizations conclude the pandemic strain is a naturally-occurring virus and not laboratory-derived.[152]
2009 (December) Influenzavirus A (H1N1) Non-human (canine) Infection The first case of a dog with H1N1 is reported.[153] United States
2009 (December) Influenzavirus A (H1N1) Human Medical development A study finds that H1N1 flu can cause pulmonary embolism, surmised as a leading cause of death in the pandemic. The study authors suggest physician evaluation via contrast enhanced CT scans for the presence of pulmonary emboli when caring for patients diagnosed with respiratory complications from a "severe" case of the H1N1 flu.[154] United States
2009 (December 23) Human Vaccine approval The U.S. Food and Drug Administration approves high-dose inactivated influenza vaccine (Fluzone High-Dose) for people ages 65 years and older.[155] United States
2009–2010 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2009-2010 influenza season (northern hemisphere winter) containing the following:
  • an A/Brisbane/59/2007 (H1N1)-like virus; and
  • an A/Brisbane/10/2007 (H3N2)-like virus.[156]
Northern hemisphere
2010 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2010 influenza season (southern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)-like virus;
  • an A/Perth/16/2009 (H3N2)-like virus; and
  • a B/Brisbane/60/2008-like virus.[157]
Southern hemisphere
2010 Human Publication Influenza and Public Health: Learning from Past Pandemics is published by Tamara Giles-Vernick, Susan Craddock, and Jennifer Lee Gunn. The book explores past influenza pandemics with the purpose to obtain critical insights into possible transmission patterns, experiences, mistakes, and interventions.[158]
2010 (August 11) Influenzavirus A (H1N1) Human Epidemic The World Health Organization declares end to 2009 H1N1 influenza pandemic.[159]
2010 Influenzavirus A Tool launch The Influenza Risk Assessment Tool (IRAT) is launched as an evaluation tool developed by the U.S. Centers for Disease Control and Prevention and external influenza experts. IRAT has the purpose to asses the potential pandemic risk posed by influenza A viruses that currently circulate in animals but not in humans. It evaluates risk elements in three domains: virus (e.g. genomic variation), population (e.g. existing population immunity), and ecology (e.g. global geographic distribution).[160][161] United States
2010–2011 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2010-2011 influenza season (northern hemisphere):
  • an A/California/7/2009 (H1N1)-like virus;
  • an A/Perth/16/2009 (H3N2)-like virus; and
  • a B/Brisbane/60/2008-like virus.[162]
Northern hemisphere
2011 (March) General Publication The World Health Organization releases its global standards and tools for influenza surveillance. The report summarizes the discussions and recommendations concluded in a global consultation aimed at reviewing influenza surveillance standards and the current data-sharing and reporting tools.[163]
2011 H3N8 Non–human Epizootic Influenza A virus subtype H3N8 causes death of more than 160 baby seals in New England.[164] United States
2011 Influenzavirus A (H1N1) General Recommendation The Advisers to the WHO Consultation on the Composition of Influenza Vaccines for the Southern Hemisphere 2012, advise WHO to use the nomenclature: A(H1N1)pdm09 in order to minimize confusion, and to differentiate the virus from the old seasonal A(H1N1) viruses circulating in humans before the pandemic (H1N1) 2009. This standardization would help to minimize potential confusion among the scientific community as well as the general public.[165]
2011 (July 22) Influenzavirus A (H1N1) Non-human (mink) Infection The Norwegian Veterinary Institute reports the first occurrence of 2009-H1N1 influenza virus in minks.[166] Norway
2011 (August) Influenzavirus A (H1N1) Non-human (sea otter) Epizootic According to the United States Geological Survey and the Centers for Disease Control and Prevention, northern sea otters off the coast of Washington state were infected with the same version of the H1N1 flu virus that caused the 2009 pandemic and "may be a newly identified animal host of influenza viruses".[167] United States
2011 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2011 influenza season (southern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)-like virus;
  • an A/Perth/16/2009 (H3N2)-like virus; and
  • a B/Brisbane/60/2008-like virus.[168]
Southern hemisphere
2011–2012 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2011-2012 influenza season (northern hemisphere) containing the following:
  • an A/California/7/2009 (H1N1)-like virus;
  • an A/Perth/16/2009 (H3N2)-like virus; and
  • a B/Brisbane/60/2008-like virus.[169]
Northern hemisphere
2012 Research A 2012 meta-analysis finds that flu shots are efficacious 67 percent of the time.[170]
2012 Influenzavirus A (H5N1) Research (virology) American virologists Ron Fouchier and Yoshihiro Kawaoka intentionally develop a strain based on H5N1 for which no vaccine exists, causing outrage in both the media and scientific community.[171][172][173] Netherlands (Erasmus Medical Center), United States (University of Wisconsin-Madison)
2012 (July) Human Publication The World Health Organization publishes its WHO Global Epidemiological Surveillance Standards for Influenza.[174]
2012 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2012 influenza season (southern hemisphere) containing the following:
  • an A/California/7/2009 (H1N1)pdm09-like virus;
  • an A/Perth/16/2009 (H3N2)-like virus; and
  • a B/Brisbane/60/2008-like virus.[175]
2012 General Publication Yoshihiro Kawaoka and Gabriele Neumann publish Influenza Virus: Methods and Protocols. It summarizes techniques ranging from protocols for virus isolation, growth, and subtyping to procedures for the efficient generation of any influenza virus.[176]
2012 Human Medical development (vaccine) United States FDA approves first seasonal influenza vaccine manufactured using cell culture technology.[177] United States
2012 Human Publication Jonathan Van-Tam publishes Pandemic Influenza, which covers the science and operational application of influenza epidemiology, virology and immunology.[178]
2012 (November 20) Human Medical development (vaccine) Novartis receives approval by the U.S. Food and Drug Administration for the first cell-culture influenza vaccine.[179] United States
2012 (December 12) Human Vaccine approval The U.S. Food and Drug Administration approves quadrivalent formulation of Fluarix (inactivated influenza vaccine; GlaxoSmithKline).[180] United States
2012–2013 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2012-2013 influenza season (northern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)pdm09-like virus;
  • an A/Victoria/361/2011 (H3N2)-like virus; and
  • a B/Wisconsin/1/2010-like virus.[181]
Northern hemisphere
2013 H7N9 Human, avian Epidemic Avian Influenza A virus subtype H7N9 strain, a low pathogenic AI virus, breaks out in China. As of April 11, 2014, the outbreak's overall reaches 419 people, including 7 in Hong Kong, with the unofficial death toll at 127.[182][183] China, Vietnam
2013 (June 7) Human Vaccine approval The U.S. Food and Drug Administration approves Fluzone (Sanofi Pasteur) as the third quadrivalent influenza vaccine licensed for U.S. use.[184] United States
2013 (June 20) Human Vaccine recommendation The Advisory Committee on Immunization Practices (ACIP) votes to recommend FluBlok influenza vaccine for people age 18 through 49 with egg allergy.[185] United States
2013 (August 16) Human Vaccine approval The U.S. Food and Drug Administration extends FluLaval IIV (GlaxoSmithKline) age range to include children and teens age 3–17 years; licenses quadrivalent FluLaval product.[186] United States
2013 Non-human (domestic duck) Influenzavirus A (H11N9 H11N9 was isolated from a domestic duck in live-poultry markets in Eastern China.[187] China
2013 Human Vaccine approval The U.S. Food and Drug Administration approves influenza vaccine Flublok (Protein Sciences), developed through recombinant DNA technology.[188] United States
2013 Influenzavirus A (H1N1) Human Publication Radiology of Influenza A (H1N1) is published by Hongjun Li, presenting the theory of influenza and its imaging characteristics.[189]
2013 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2013 influenza season (southern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)pdm09-like virus;
  • an A/Victoria/361/2011 (H3N2)-like virus; and
  • a B/Wisconsin/1/2010-like virus.[190]
Southern hemisphere
2013 Human Medical development (vaccine) United States FDA approves influenza vaccine Flublok (Protein Sciences), developed through recombinant DNA technology.[191] United States
2013 H10N8 Human, avian Infection Avian Influenza A virus subtype H10N8 strain in reported to infect humans for the first time and kills one person.[192][38] China
2013–2014 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2013-14 influenza season (northern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)pdm09-like virus;
  • an A(H3N2) virus antigenically like the cell-propagated prototype virus A/Victoria/361/2011; and
  • a B/Massachusetts/2/2012-like virus.[193]
Northern hemisphere
2014 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2014 influenza season (southern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)pdm09-like virus;
  • an A/Texas/50/2012 (H3N2)-like virus; and
  • a B/Massachusetts/2/2012-like virus.[194]
Southern hemisphere
2014 Human Vaccine cost The wholesale price per dose of influenza vaccine in the developing world is about US$5.25 as of year.[195] Developing world
2014 (December 11) Human Vaccine approval The U.S. Food and Drug Administration approves quadrivalent formulation of Fluzone Intradermal inactivated influenza vaccine.[196] United States
2014 (December 19) Human Vaccine approval The U.S. Food and Drug Administration approves Rapivab to treat influenza infection.[197] United States
2014–2015 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2014-2015 influenza season (northern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)pdm09-like virus;
  • an A/Texas/50/2012 (H3N2)-like virus; and
  • a B/Massachusetts/2/2012-like virus.[198]
Northern hemisphere
2015 Human Program Google Flu Trends shuts down in August 2015 after successive inaccuracies in the big data analysis.[199] After performing well for two to three years since the service launch in 2008, GFT would start to fail significantly and require substantial revision.[200] However, Google Flu Trends would also inspire several other similar projects that use social media data to predict disease trends.[201] United States
2015 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2015 influenza season (southern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)pdm09-like virus;
  • an A/Switzerland/9715293/2013 (H3N2)-like virus; and
  • a B/Phuket/3073/2013-like virus.[202]
Southern hemisphere
2015 (July 12) Influenzavirus A (H5N6) Human Infection As of date, four known cases of influenza A virus subtype H5N6 infection, three fatal, have occurred in humans.[203][204][205][206]
2015 Influenzavirus A (H1N1) Human Epidemic The 2015 Indian swine flu outbreak causes nearly 30,000 laboratory confirmed cases with more than 1700 deaths by March 15. Most of these cases are reported from the states of Rajasthan, Gujarat, Delhi, Jammu and Kashmir, Maharashtra, Madhya Pradesh, Telangana, Karnataka and Tamil Nadu.[207] India
2015 (November 24) Human Vaccine approval The U.S. Food and Drug Administration approves new injectable influenza vaccine, Fluad, for use in people age 65 years and older.[208] United States
2015–2016 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2015-2016 influenza season (northern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)pdm09-like virus;
  • an A/Switzerland/9715293/2013 (H3N2)-like virus;
  • a B/Phuket/3073/2013-like virus.[209]
Northern hemisphere
2016 (May) Human Tool launch The Tool for Influenza Pandemic Risk Assessment (TIPRA) is developed by the World Health Organization to provide a standardized and transparent approach to support the risk assessment of influenza viruses with pandemic potential. TIPRA supports hazard assessment by asking a risk question about the pandemic likelihood and impact of an influenza virus.[210]
2016 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2016 influenza season (southern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)pdm09-like virus;
  • an A/Hong Kong/4801/2014 (H3N2)-like virus;
  • a B/Brisbane/60/2008-like virus.[211]
Southern hemisphere
2016 Influenzavirus A (H1N1) Non-human (porcine) Research (virology) A report by researchers at the Mount Sinai School of Medicine finds that the 2009 H1N1 virus likely originated from pigs in a very small region of central Mexico.[212] Mexico, United States
2016 Human Medical development (vaccine) Vaxigrip Tetra is approved in Europe except for infants younger than three years old.[213] Europe
2016 (November 18) Human Vaccine approval The U.S. Food and Drug Administration approves extending the age range for use of FluLaval Quadrivalent to include children 6 to 35 months of age.[214] United States
2016 (November–December) Influenzavirus A (H5N6) Human Infection Human cases of H5N6 are reported in China.[215] China
2016–2017 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2016-2017 influenza season (northern hemisphere winter) containing the following:
  • an A/California/7/2009 (H1N1)pdm09-like virus;
  • an A/Hong Kong/4801/2014 (H3N2)-like virus;
  • a B/Brisbane/60/2008-like virus.[216]
Northern hemisphere
2017 Human Medical development Researchers from the University of Texas at Arlington build influenza detector that can diagnose at a breath, without the intervention of a doctor.[217] United States
2017 H5N6 Avian Epizootic 2017 Central Luzon H5N6 outbreak[218] Philippines
2017 Human Research Researchers from the University of Helsinki demonstrate that three anti-influenza compounds effectively inhibit zika virus infection in human cells.[219] Finland
2017 Human Publication Mieczyslaw Pokorski publishes Influenza and Respiratory Care.[220]
2017 (August 25) Influenza Human Recommendation The U.S. Centers for Disease Control and Prevention publishes ACIP 2017–18 influenza vaccination recommendations.[221]
2017 (August 31) Human Vaccine approval The U.S. Food and Drug Administration expands licensure of Afluria quadrivalent (Seqirus) to include people age 5 years and older.[222]
2017–2018 Influenzavirus A (H1N1) Human Epidemic Pakistan reports H1N1 cases mostly arising from the city of Multan, with deaths resulting from the epidemic reaching 42.[223] Pakistan
2017–2018 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2017-2018 northern hemisphere influenza season containing the following:
  • an A/Michigan/45/2015 (H1N1)pdm09-like virus;
  • an A/Hong Kong/4801/2014 (H3N2)-like virus;
  • a B/Brisbane/60/2008-like virus.[224]
Northern hemisphere
2018 (January 11) Human Vaccine approval The U.S. Food and Drug Administration approves expanded pediatric age indication for Fluarix Quadrivalent influenza vaccine."[225] United States
2018 (February) Influenzavirus A, influenzavirus B Human Medical development Antiviral medication Xofluza (baloxavir marboxil) is approved for sale in Japan.[226] Japan
2018 (June 8) Human Vaccine recommendation The U.S. Centers for Disease Control and Prevention publishes ACIP's recommendations for the use of quadrivalent live attenuated influenza vaccine (LAIV4) in the 2018–19 influenza season."[227]
2018 (August 24) Human Vaccine recommendation The U.S. Centers for Disease Control and Prevention publishes ACIP's 2018–19 influenza vaccination recommendations.[228]
2018 (October) Human Vaccine approval The U.S. Food and Drug Administration approves expanded age indication for Seqirus’s Afluria influenza vaccine to include children age 6 months through 59 months.[229]
2018 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2018 southern hemisphere influenza season containing the following:
  • an A/Michigan/45/2015 (H1N1)pdm09-like virus;
  • an A/Singapore/INFIMH-16-0019/2016 (H3N2)-like virus;
  • a B/Phuket/3073/2013-like virus.[230]
Southern hemisphere
2019 (January) Influenzavirus A (H1N1) Human Epidemic An outbreak of H1N1 is recorded in Morocco, with nine confirmed fatalities.[231] Morocco
2019 (January 23) Human Vaccine approval The U.S. Food and Drug Administration approves use of the 0.5 mL dose of Sanofi's Fluzone Quadrivalent influenza vaccine to include children age 6 through 35 months.[232] United States
2019 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2019 southern hemisphere influenza season containing the following:
  • an A/Michigan/45/2015 (H1N1)pdm09-like virus;
  • an A/Switzerland/8060/2017 (H3N2)-like virus;
  • a B/Colorado/06/2017-like virus (B/Victoria/2/87 lineage);
  • a B/Phuket/3073/2013-like virus (B/Yamagata/16/88 lineage).

The World Health Organization also recommends that egg based trivalent vaccines for use in the 2019 southern hemisphere influenza season contain the following:

  • an A/Michigan/45/2015 (H1N1)pdm09-like virus;
  • an A/Switzerland/8060/2017 (H3N2)-like virus; and
  • a B/Colorado/06/2017-like virus (B/Victoria/2/87 lineage).

It is recommended that the A(H3N2) component of non-egg based vaccines for use in the 2019 southern hemisphere influenza season be:

  • A/Singapore/INFIMH-16-0019/2016-like virus together with the other vaccine components as indicated above.[233]
2019 (August 28) Vaccine recommendation The U.S. Centers for Disease Control and Prevention releases ACIP recommendations on the use of influenza vaccines for the 2019–20 influenza season.[234] United States
2019 (November 4) Vaccine approval The U.S. Food and Drug Administration approves Fluzone High-Dose Quadrivalent (Sanofi Pasteur) for adults 65+ years of age—will be available for 2020–21 flu season.[235] United States
2019 (November) Influenzavirus A (H1N1) Human Epidemic An outbreak of H1N1 is recorded in Iran, with 56 fatalities and 4,000 people hospitalized.[236] Iran
2019–2020 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2019-2020 northern hemisphere influenza season containing the following:
  • an A/Brisbane/02/2018 (H1N1)pdm09-like virus;
  • an A/Kansas/14/2017 (H3N2)-like virus;
  • a B/Colorado/06/2017-like virus (B/Victoria/2/87 lineage); and
  • a B/Phuket/3073/2013-like virus (B/Yamagata/16/88 lineage).[237]
Northern hemisphere
2020 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2020 southern hemisphere influenza season containing the following:
  • an A/Brisbane/02/2018 (H1N1)pdm09-like virus;
  • an A/South Australia/34/2019 (H3N2)-like virus;
  • a B/Washington/02/2019-like (B/Victoria lineage) virus;
  • a B/Phuket/3073/2013-like (B/Yamagata lineage) virus.

WHO also recommends that trivalent influenza vaccines for use in the 2020 southern hemisphere influenza season contain the following:

  • an A/Brisbane/02/2018 (H1N1)pdm09-like virus;
  • an A/South Australia/34/2019 (H3N2)-like virus; and
  • a B/Washington/02/2019-like (B/Victoria lineage) virus.[238]
Southern hemisphere
2020 (January) Influenzavirus A (H5N1) Human Medical development (vaccine) The U.S. Food and Drug Administration approves Audenz, an adjuvanted influenza A (H5N1) monovalent vaccine.[239][240] Audenz is a vaccine indicated for active immunization for the prevention of disease caused by the influenza A virus H5N1 subtype contained in the vaccine. Audenz is approved for use in persons six months of age and older at increased risk of exposure to the influenza A virus H5N1 subtype contained in the vaccine.[239] United States
2020 (February 21) Human Vaccine approval The U.S. Food and Drug Administration approves the first adjuvanted quadrivalent flu shot for seniors.[241] United States
2020–2021 Influenzavirus A (H3N2, H1N1) Human Vaccine recommendation The World Health Organization recommends vaccines to be used in the 2020 - 2021 northern hemisphere influenza season containing the following:

Egg-based Vaccines:

  • an A/Guangdong-Maonan/SWL1536/2019 (H1N1)pdm09-like virus;
  • an A/Hong Kong/2671/2019 (H3N2)-like virus;
  • a B/Washington/02/2019 (B/Victoria lineage)-like virus; and
  • a B/Phuket/3073/2013 (B/Yamagata lineage)-like virus.

Cell- or recombinant-based Vaccines:

  • an A/Hawaii/70/2019 (H1N1)pdm09-like virus;
  • an A/Hong Kong/45/2019 (H3N2)-like virus;
  • a B/Washington/02/2019 (B/Victoria lineage)-like virus; and
  • a B/Phuket/3073/2013 (B/Yamagata lineage)-like virus.

It is recommended that trivalent influenza vaccines for use in the 2020 - 2021 northern hemisphere influenza season contain the following:

Egg-based Vaccines

  • an A/Guangdong-Maonan/SWL1536/2019 (H1N1)pdm09-like virus;
  • an A/Hong Kong/2671/2019 (H3N2)-like virus; and
  • a B/Washington/02/2019 (B/Victoria lineage)-like virus.

Cell- or recombinant-based Vaccines

  • an A/Hawaii/70/2019 (H1N1)pdm09-like virus;
  • an A/Hong Kong/45/2019 (H3N2)-like virus; and
  • a B/Washington/02/2019 (B/Victoria lineage)-like virus.[242]
Northern hemisphere

Meta information on the timeline

How the timeline was built

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See also

External links

References

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