Changes

The comparative chart below shows {{w|Google Trends}} data for Lockdown (Topic) and Quarantine (Topic), from January 2004 to March 2021, when the screenshot was taken. Interest is also ranked by country and displayed on world map.<ref>{{cite web |title=Lockdown and Quarantine |url=https://trends.google.com/trends/explore?date=all&q=%2Fm%2F07l88z,%2Fm%2F069q9 |website=Google Trends |access-date=30 March 2021}}</ref>

The image shows {{w|Google Trends}} data for "infection" and "quarantine" search terms from January 2004 to June 2020.<ref>{{cite web |title=Google Trends |url=https://trends.google.com/trends/explore?date=all&q=infection,quarantine |website=trends.google.com |accessdate=26 June 2020}}</ref> The latter peaks in March 2020, during the {{w|COVID-19 pandemic}}, the month when the {{w|United States}} becomes the country with the highest number of confirmed {{w|COVID-19}} infections.

The chart below shows {{w|Google Ngram Viewer}} data for Infection control, from 1900 to 2019.<ref>{{cite web |title=Infection control |url=https://books.google.com/ngrams/graph?content=infection+control&year_start=1900&year_end=2019&corpus=26&smoothing=3&case_insensitive=true |website=books.google.com |access-date=28 February 2021 |language=en}}</ref>

=== Wikipedia views ===

The image below shows {{w|Wikipedia}} views desktop data for the articles {{w|Infection}}, {{w|Quarantine}}, and {{w|Infection control}}. Three local maxima in 2008, 2015, and 2020 closely match the {{w|2009 swine flu pandemic}}, the {{w|Western African Ebola virus epidemic}}, and the {{w|COVID-19 pandemic}}.<ref>{{cite web |title=Wikipedia views |url=https://wikipediaviews.org/displayviewsformultiplemonths.php?pages[0]=Infection&pages[1]=Infection+control&pages[2]=Quarantine&allmonths=allmonths&language=en&drilldown=desktop |website=wikipediaviews.org |accessdate=26 June 2020}}</ref>

==Full timeline==