Changes

* What are some varied cases examples of performance of contact tracingprograms conducted by national governments?** Sort the full timeline by "Event type" and look for the group of rows with value "{{w|Performance}}".

| January 30, 2020 – December 2020 || Period starting with the {{w|World Health Organization}} declaring CovidCOVID-19 a {{w|Public Health Emergency of International Concern}}. Right away, contact tracing for CovidCOVID-19 cases starts beig mandated in countries all over the world. Digital contact tracing via smartphone apps is established as a new public-health intervention.

| 2020 || January 23 || Background || The first COVID-19 case in Vietnam is diagnosed.<ref>{{cite web |last1=Team |first1=Content |title=THE PANDEMIC – What Canada Should Have Done and Should Be Doing {{!}} SaultOnline.com |url=https://saultonline.com/2021/04/the-pandemic-what-canada-should-have-done-and-should-be-doing/ |website=saultonline.com |access-date=4 April 2021 |language=en-CA}}</ref> Very early, realizing that an effective tracing system is the most critical component of the pandemic response, this country would immediately develop and implement a thorough, accurate and centralized contact tracing system consisting in three levels, with all of those affected people being tested immediately.<ref name="sdwrr">{{cite web |last1=Jha |first1=Prof Pankaj |title=Vietnam’s efforts against COVID-19: An Assessment |url=https://moderndiplomacy.eu/2021/03/18/vietnams-efforts-against-covidCOVID-19-an-assessment/ |website=Modern Diplomacy |access-date=4 April 2021 |date=18 March 2021}}</ref><ref>{{cite web |title=Doing it better: The lesson from Vietnam – The Manila Times |url=https://www.manilatimes.net/2021/03/23/business/columnists-business/doing-it-better-the-lesson-from-vietnam/854362/ |website=www.manilatimes.net |access-date=4 April 2021}}</ref> || {{w|Vietnam}}

| 2020 || January 30 || Background || The {{w|World Health Organization}} declares the {{w|COVID-19}} outbreak a {{w|Public Health Emergency of International Concern}}.<ref>{{cite web |title=WHO declares Public Health Emergency on novel coronavirus - PAHO/WHO {{!}} Pan American Health Organization |url=https://www.paho.org/en/news/30-1-2020-who-declares-public-health-emergency-novel-coronavirus |website=www.paho.org |access-date=24 March 2021 |language=en}}</ref><ref>{{cite web |title=COVID-19 Public Health Emergency of International Concern (PHEIC) Global research and innovation forum |url=https://www.who.int/publications/m/item/covidCOVID-19-public-health-emergency-of-international-concern-(pheic)-global-research-and-innovation-forum |website=www.who.int |access-date=24 March 2021 |language=en}}</ref> ||

| 2020 || February 11 || {{w|Mobile app}} launch || China becomes the first country to try a contact tracing app as a means of curbing the spread of {{w|COVID-19}}, after the Chinese Government launches coronavirus close contact detector app “health code” nationwide, as a means of controlling people’s movements. The app, developed by {{w|Alibaba Group}} and {{w|Tencent}}, allows users to access through Alipay or WeChat and input their phone number, full name and ID number.<ref name="inalau">{{cite web |title=China launches coronavirus 'close contact detector' app |url=https://www.bbc.com/news/technology-51439401 |website=BBC News |access-date=19 January 2021 |date=11 February 2020}}</ref><ref name="CovidCOVID-19 contv">{{cite web |title=CovidCOVID-19 contact tracing apps: why they are so popular in China {{!}} Merics |url=https://merics.org/en/short-analysis/covidCOVID-19-contact-tracing-apps-why-they-are-so-popular-china |website=merics.org |access-date=26 April 2021 |language=en}}</ref> || {{w|China}}

| 2020 || February || Organization || {{w|PathCheck}} is founded at {{w|MIT}} as a {{w|volunteer}}-led non profit organization<ref>{{cite news | title= Because Hamiltonians Track COVID-19: John Werner '92|url=https://www.hamilton.edu/news/story/covid19-contact-tracing-mit}}</ref><ref>{{cite news | title=How an MIT spin-off is using contact tracing to fight COVID-19, and so can you | url=https://www.techrepublic.com/article/how-an-mit-spin-off-is-using-contact-tracing-to-fight-covidCOVID-19-and-so-can-you/}}</ref> that develops {{w|COVID-19 apps}} for {{w|digital contact tracing}}.<ref>{{cite news |url=https://venturebeat.com/2020/04/08/mit-announces-bluetooth-breakthrough-in-coronavirus-tracing-app-for-android-and-ios/ | title=MIT announces Bluetooth breakthrough in coronavirus tracing app for android and ios}}</ref> Their original technology is based on the MIT Private Kit.<ref>{{cite web |title=PATHCHECK FOUNDATION |url=http://okosvaros.lechnerkozpont.hu/en/node/873 |website=okosvaros.lechnerkozpont.hu |access-date=8 March 2021}}</ref><ref>{{cite web |title=PathCheck |url=https://www.pathcheck.org/en/about |website=pathcheck.org |access-date=16 January 2021}}</ref> || {{w|United States}}

| 2020 || February || Policy || {{w|Egypt}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|Egypt}}

| 2020 || February || Policy || {{w|Nigeria}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|Nigeria}}

| 2020 || February || Policy || {{w|Saudi Arabia}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|Saudi Arabia}}

| 2020 || March 9 || {{w|Digital privacy}} || Google removes Iran's official COVID-19 detection app from {{w|Play Store}} after several users accused accuse the Iranian government of using the app to collect phone numbers and real-time geo-location data.<ref name="Cimpcatal">{{cite web |last1=Cimpanu |first1=Catalin |title=Spying concerns raised over Iran's official COVID-19 detection app |url=https://www.zdnet.com/article/spying-concerns-raised-over-irans-official-covidCOVID-19-detection-app/ |website=ZDNet |access-date=20 January 2021 |language=en}}</ref><ref name="irswll">{{cite web |title=Iran: Google withdraws Iranian government COVID-19 self-diagnosis app |url=https://privacyinternational.org/examples/3440/iran-google-withdraws-iranian-government-covidCOVID-19-self-diagnosis-app |website=Privacy International |access-date=20 January 2021}}</ref> || {{w|Iran}}

| 2020 || March 9 || {{w|Mobile app}} launch || The Colombian president announces the launch of an application for mobile devices that would help centralize information related to the spread, prevention and treatment of COVID-19 in the country.<ref name="colomshak">{{cite web |title=Colombian president launches app to track COVID-19 |url=https://www.aa.com.tr/en/americas/colombian-president-launches-app-to-track-covidCOVID-19/1759011 |website=aa.com |access-date=20 January 2021}}</ref> || {{w|Colombia}}

| 2020 || March 11 || Background || The {{w|World Health Organization}} declares CovidCOVID-19 a {{w|pandemic}}.<ref name="dsde"/> ||

| 2020 || March 12 || Program shutdown || {{w|Public Health England}} stops performing a {{w|contact tracing}} program, as widespread infections overwhelm capacity of contact tracers, as and with the program could being able to handle up to 50 people per week.<ref>{{Cite news|last=Tapper|first=James|url=https://www.theguardian.com/world/2020/apr/04/recruit-volunteer-army-to-trace-coronavirus-contacts-now-urge-top-scientists|title=Recruit volunteer army to trace CovidCOVID-19 contacts now, urge top scientists|date=6 December 2020|work=The Guardian|access-date=18 April 2020|issn=0261-3077}}</ref><ref>{{cite web |last1=Heren |first1=Kit |title=Contact tracers could deal with five people a week before scheme ended |url=https://www.standard.co.uk/news/uk/uk-contact-tracers-five-week-a4455536.html |website=www.standard.co.uk |access-date=2 March 2021 |language=en |date=31 May 2020}}</ref> || {{w|United Kingdom}} ({{w|England}})

| 2020 || March || Policy || {{w|Russia}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|Russia}}

| 2020 || March || Policy || {{w|South Africa}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|South Africa}}

| 2020 || March || Policy || {{w|Argentina}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|Argentina}}

| 2020 || March || Policy || {{w|Chile}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|Chile}}

| 2020 || March 20 || {{w|Mobile app}} launch || Singapore launches the TraceTogether, an application aimed at working by exchanging short distance Bluetooth signals between phones to detect other participating users in close proximity of 2 meters. After giving consent during the set-up of the app, users need to turn on their Bluetooth, as well as enable push notifications and location permissions. It The app is developed by Singapore’s Government Technology Agency (GovTech) and the health ministry.<ref>{{cite web |title=Singapore launches contact tracing mobile app to track coronavirus infections |url=https://www.arabnews.com/node/1644346/media |website=arabnews.com |access-date=6 December 2020}}</ref><ref>{{cite web |title=Singapore launches TraceTogether mobile app to boost COVID-19 contact tracing efforts |url=https://www.channelnewsasia.com/news/singapore/covid19-trace-together-mobile-app-contact-tracing-coronavirus-12560616 |website=channelnewsasia.com |access-date=17 January 2021}}</ref> || {{w| Singapore}}

| 2020 || March 25 || {{w|Mobile app}} launch || Stopp Corona is launched in Austria by the Austrian Red Cross, in cooperation with other organizations. The app is aimed at tracing contacts for preventing the spread COVID-19 infections.<ref name="dsde">{{cite web |title=Digital contact-tracing during the CovidCOVID-19 pandemic: an analysis of newspaper coverage in Germany, Austria, and Switzerland |url=https://www.medrxiv.org/content/10.1101/2020.10.22.20216788v1.full.pdf |website=medrxiv.org |access-date=6 December 2020}}</ref><ref>{{cite web |last1=Fritz |first1=Freshfields Bruckhaus Deringer LLP-Gernot |last2=Klimpfinger |first2=Boris |title=Contact tracing apps in Austria: a Red Cross initiative {{!}} Lexology |url=https://www.lexology.com/library/detail.aspx?g=9981f095-1f87-46ce-92df-d28352643e98 |website=www.lexology.com |access-date=3 February 2021 |language=en}}</ref><ref name="Sleigh">{{cite journal |last1=Amann |first1=Julia |last2=Sleigh |first2=Joanna |last3=Vayena |first3=Effy |title=Digital contact-tracing during the CovidCOVID-19 pandemic: An analysis of newspaper coverage in Germany, Austria, and Switzerland |journal=PLOS ONE |date=3 February 2021 |volume=16 |issue=2 |pages=e0246524 |doi=10.1371/journal.pone.0246524}}</ref> || {{w|Austria}}

| 2020 || April 1 || Protocol introduction || The {{w|Pan-European Privacy-Preserving Proximity Tracing}} protocol is introduced to facilitate {{w|digital contact tracing}} of infected participants.<ref>{{Cite web|url=https://social.techcrunch.com/2020/04/17/europes-pepp-pt-covidCOVID-19-contacts-tracing-standard-push-could-be-squaring-up-for-a-fight-with-apple-and-google/|title=Europe's PEPP-PT COVID-19 contacts tracing standard push could be squaring up for a fight with Apple and Google|website=TechCrunch|language=en-US|access-date=8 March 2021}}</ref><ref>{{cite web |title=European experts ready smartphone technology to help stop coronavirus |url=https://www.reuters.com/article/us-health-coronavirus-europe-tech-idUSKBN21J4HI |website=reuters.com |access-date=6 December 2020}}</ref><ref>{{cite web |last1=Staff |first1=Reuters |title=Europe to launch coronavirus contact tracing app initiative |url=https://www.reuters.com/article/health-coronavirus-europe-tech/europe-to-launch-coronavirus-contact-tracing-app-initiative-idUSL8N2BP1N0 |website=Reuters |access-date=8 March 2021 |language=en |date=1 April 2020}}</ref><ref>{{cite web |title=Europe’s PEPP-PT COVID-19 contacts tracing standard push could be squaring up for a fight with Apple and Google |url=https://techcrunch.com/2020/04/17/europes-pepp-pt-covidCOVID-19-contacts-tracing-standard-push-could-be-squaring-up-for-a-fight-with-apple-and-google/ |website=TechCrunch |access-date=8 March 2021}}</ref> ||

| 2020 || April 2 || {{w|Mobile app}} launch || The Government of India launches {{w|Aarogya Setu}}, an app aimed at enabling people to assess themselves the risk of their catching CovidCOVID-19 infection. The app It is available in 11 languages.<ref>{{cite web |title=Government of India launches ArogyaSetu App to track Covid COVID-19 infection |url=https://aarogyasetu.gov.in/wp-content/uploads/2020/11/mygov-9999999991925749197.pdf |website=aarogyasetu.gov.in |access-date=6 December 2020}}</ref> || {{w|India}}

| 2020 || April 3 || {{w|Mobile app}} launch || The {{w|Government of Peru }} announces launch of app that would allow users share their location in the event that they have tested positive for Coronavirus{{w|COVID-19}}.<ref name="Perdatmegus">{{cite web |title=Peru: Presidency announces launch of Coronavirus app |url=https://www.dataguidance.com/news/peru-presidency-announces-launch-coronavirus-app |website=DataGuidance |access-date=24 January 2021 |language=en |date=9 April 2020}}</ref> || {{w|Peru}}

| 2020 || April 8 || {{w|Mobile app}} launch || {{w|Egypt}} launches a mobile application to track aimed at tracking both new coronavirus {{w|COVID-19}} cases and those in contact with patients.<ref name="Egyfcueds">{{cite web |title=Egypt launches mobile application to track coronavirus cases - Politics - Egypt |url=http://english.ahram.org.eg/NewsContent/1/64/366870/Egypt/Politics-/Egypt-launches-mobile-application-to-track-coronav.aspx |website=Ahram Online |access-date=20 January 2021 |language=en}}</ref><ref>{{cite web |title=AfricaPLC.com {{!}} |url=https://africaplc.com/2020/04/08/egypt-launches-mobile-application-to-track-coronavirus-cases/?v=edb5dc74af1c |website=AfricaPLC.com |access-date=2 March 2021 |language=en-ZA |date=8 April 2020}}</ref> || {{w|Egypt}}

| 2020 || April 9 || {{w|Mobile app}} launch || The Afghan Ministry of Public Health and Ministry of Telecommunications and Information Technology launch launches COVID-19 tracing app <code>corona.asan.gov.af</code>, which provides health advice in English, {{w|Dari}}, and {{w|Pashto}}.<ref name="Afghfotne">{{cite web |title=Afghan Ministries Launch Coronavirus Tracking App |url=https://tolonews.com/afghanistan/afghan-ministries-launch-coronavirus-tracking-app |website=TOLOnews |access-date=24 January 2021 |language=en}}</ref><ref>{{cite web |title=Afghanistan launches health information and self-evaluation app |url=https://privacyinternational.org/examples/3653/afghanistan-launches-health-information-and-self-evaluation-app |website=Privacy International |access-date=2 March 2021}}</ref><ref>{{cite web |title=Afghan Ministries Launch Coronavirus Tracking App - Announcements - Afghanistan Coronavirus (COVID-19) - APAN Community |url=https://community.apan.org/wg/ronna/afghanistan-coronavirus-covidCOVID-19/b/announcements/posts/afghan-ministries-launch-coronavirus-tracking-app |website=community.apan.org |access-date=2 March 2021 |language=en}}</ref> || {{w|Afghanistan}}

| 2020 || April || Policy || {{w|Turkey}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|Turkey}}

| 2020 || April || Policy || {{w|Thailand}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|Thailand}}

| 2020 || April 16 || {{w|Mobile app}} launch || {{w|IoT}} and connectivity network provider Nodle.io announces the launch of Coalition, a free contact tracing app that utilizes secure {{w|Bluetooth Low Energy }} (BLE) and {{w|cryptography }} to protect a user’s identity by generating random anonymous IDs.<ref>{{cite web |title=Nodle Launches Coalition, a Free, Privacy-First Contact Tracing App to Help Stop The Spread of COVID-19 |url=https://apnews.com/press-release/business-wire/996bc8341e414a3babfa475dcb78f2c8 |website=apnews.com |access-date=6 December 2020}}</ref> || {{w|United States}}

| 2020 || April 16 || Protocol introduction || Nodle.io releases the {{w|Whisper Tracing Protocol}} white paper, along with the launch of contact tracing app Coalition. The which introduces a protocol is intended to be a privacy first digital contact tracing tool developed for the 2020 COVID-19 pandemic.<ref>{{cite web |title=DocSend - Simple, intelligent, modern content sending |url=https://docsend.com/view/nis3dac |website=DocSend |language=en}}</ref><ref>{{cite web |title=Whisper Tracing Protocol |url=https://amp.en.google-info.cn/63881567/1/whisper-tracing-protocol.html |website=en.google-info.cn |access-date=15 March 2021 |language=en}}</ref> ||

| 2020 || April 17 || {{w|Mobile app}} launch || The {{w|Malaysian Communications and Multimedia Commission}} launches contact tracing app Gerak Malaysia, which is designed "to help the authorities in tracing and analysing analyzing users’ movement nationwide to contain the spread of the pandemic".<ref name="alays">{{cite web |title=MCMC launches contact tracing app: Gerak Malaysia (update: not approved by Mosti) {{!}} The Star |url=https://www.thestar.com.my/tech/tech-news/2020/04/17/mcmc-launches-contact-tracing-app-gerak-malaysia |website=www.thestar.com.my |access-date=24 January 2021}}</ref> || {{w|Malaysia}}

| 2020 || April 21 || {{w|Digital privacy}} || An Australian Government Services minister announces laws to be introduced in the country with the purpose to strenghten user privacy, as fears for the latter persist among citizens.<ref>{{cite web |title=Govt raises prospect of new laws for COVID contact tracing app |url=https://www.itnews.com.au/news/govt-raises-prospect-of-new-laws-for-covid-contact-tracing-app-546947 |website=iTnews |access-date=3 February 2021}}</ref> || {{w| Australia}}

| 2020 || April 24 || {{w|Mobile app}} launch || ProteGO launches in {{w|Poland}}, becoming one of {{w|EU}}’s first official CovidCOVID-19 tracking applications. This version requires users to enter their data themselves for the purposes of health self-monitoring.<ref>{{cite web |title=COVID-19: Poland Launches an Official Tracking App |url=https://www.natlawreview.com/article/covidCOVID-19-poland-launches-official-tracking-app |website=The National Law Review |access-date=3 February 2021 |language=en}}</ref> || {{w|Poland}}

| 2020 || April 26 || {{w|Mobile app}} launch || The Australian government launches a coronavirus tracing app, which uses Bluetooth signals to log when people have been close to one another. The app is based on Singapore’s TraceTogether software.<ref name="trraits">{{cite web |title=Australia launches contact tracing app |url=https://www.straitstimes.com/asia/australianz/australia-launches-contact-tracing-app |website=The Straits Times |access-date=22 January 2021 |language=en |date=27 April 2020}}</ref><ref>{{cite web |last1=Kelly |first1=Lidia |title=Australia launches controversial COVID-19 tracking app as some states start easing rules |url=https://www.reuters.com/article/us-health-coronavirus-australia/australia-launches-controversial-covidCOVID-19-tracking-app-as-some-states-start-easing-rules-idUKKCN22806F |website=Reuters |access-date=1 February 2021 |language=en |date=26 April 2020}}</ref> || {{w|Australia}}

| 2020 || April 27 || {{w|Mobile app}} launch || Mobile application "Act at Home" is launched in Ukraine. It is designed to maintain contact with the person and control the observance of obligatory self-isolation during the {{w|quarantine}}.<ref name="Cabinas">{{cite web |title=Cabinet of Ministers of Ukraine - ‘Act at Home’ app is launched to counteract the spread of COVID-19 in Ukraine |url=https://www.kmu.gov.ua/en/news/yak-pracyuye-zastosunok-dij-vdoma |website=www.kmu.gov.ua |access-date=20 January 2021 |language=en}}</ref> || {{w|Ukraine}}

| 2020 || April 27 || Performance || A study concludes that isolation and contact tracing helped control the spread of COVID-19 in {{w|Shenzhen}}, China.<ref>{{cite journal |last1=Bi |first1=Qifang |last2=Wu |first2=Yongsheng |last3=Mei |first3=Shujiang |last4=Ye |first4=Chenfei |last5=Zou |first5=Xuan |last6=Zhang |first6=Zhen |last7=Liu |first7=Xiaojian |last8=Wei |first8=Lan |last9=Truelove |first9=Shaun A |last10=Zhang |first10=Tong |last11=Gao |first11=Wei |last12=Cheng |first12=Cong |last13=Tang |first13=Xiujuan |last14=Wu |first14=Xiaoliang |last15=Wu |first15=Yu |last16=Sun |first16=Binbin |last17=Huang |first17=Suli |last18=Sun |first18=Yu |last19=Zhang |first19=Juncen |last20=Ma |first20=Ting |last21=Lessler |first21=Justin |last22=Feng |first22=Tiejian |title=Epidemiology and transmission of COVID-19 in 391 cases and 1286 of their close contacts in Shenzhen, China: a retrospective cohort study |journal=The Lancet Infectious Diseases |date=August 2020 |volume=20 |issue=8 |pages=911–919 |doi=10.1016/S1473-3099(20)30287-5}}</ref><ref>{{cite web |last1=Apr 28 |first1=Mary Van Beusekom|title=Study: Contact tracing slowed COVID-19 spread in China |url=https://www.cidrap.umn.edu/news-perspective/2020/04/study-contact-tracing-slowed-covidCOVID-19-spread-china |website=CIDRAP |access-date=26 April 2021 |language=en}}</ref> || {{w|China}}

| 2020 || May 12 || {{w|Mobile app}} launch || {{w|Salesforce}} launches coronavirus contact tracing platform for tracking exposure to COVID-19, . It is available in {{w|Rhode Island}}, {{w|Massachusetts}}, {{w|Louisiana}}, {{w|California}} , and {{w|New York City}}.<ref>{{cite web |title=Salesforce coronavirus contact tracing platform goes national |url=https://searchcustomerexperience.techtarget.com/news/252483022/Salesforce-coronavirus-contact-tracing-platform-goes-national |website=SearchCustomerExperience |access-date=15 March 2021 |language=en}}</ref> || {{w|United States}}

| 2020 || May || Policy || {{w|France}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|France}}

| 2020 || May 19 || {{w|Mobile app}} launch || The Ministry of Health of New Zealand releases the NZ COVID Tracer app, with the purpose to support contact tracing in the country. The software emphasizes privacy and data security, being programmed to store information in the user phone and delet delete it after 31 days.<ref>{{cite web |title=CovidCOVID-19 tracing app launched earlier than expected |url=https://www.rnz.co.nz/news/national/417045/covidCOVID-19-tracing-app-launched-earlier-than-expected |website=RNZ |access-date=3 February 2021 |language=en-nz |date=19 May 2020}}</ref> {{w|NZ COVID Tracer}}<ref>{{cite web |title=NZ COVID Tracer app released to support contact tracing |url=https://www.health.govt.nz/news-media/media-releases/nz-covid-tracer-app-released-support-contact-tracing |website=health.govt.nz |access-date=6 December 2020}}</ref> || {{w|New Zealand}}

| 2020 || May 19 || Policy || Taiwan enforces policy mandating all people entering public buildings to leave their contact information or sharing to share their whereabouts via text message.<ref>{{cite web |last1=News |first1=Taiwan |title=Taiwan's local governments blast contact tracing system {{!}} Taiwan News {{!}} 2021-06-29 17:35:00 |url=https://www.taiwannews.com.tw/en/news/4235417 |website=Taiwan News |access-date=29 June 2021}}</ref> || {{w|Taiwan}}

| 2020 || May 20 || Protocol introduction || The {{w|Exposure Notification}} (GAEN) system, originally known as the Privacy-Preserving Contact Tracing Project,<ref>{{cite web |url=https://www.apple.com/covid19/contacttracing/ |title=Privacy-Preserving Contact Tracing |date=10 April 2020 |publisher=Apple }}</ref> is introduced as a framework and protocol specification developed by {{w|Apple Inc.}} and {{w|Google}} to facilitate {{w|digital contact tracing}} during the {{w|COVID-19 pandemic}}.<ref>{{cite web |title=COVID-19 exposure notification settings begin to go live for iOS users with new update |url=https://techcrunch.com/2020/05/20/covidCOVID-19-exposure-notification-settings-begin-to-go-live-for-ios-users-with-new-update/ |website=techcrunch.com |access-date=6 December 2020}}</ref><ref>{{Cite web|title=Exposure Notification API launches to support public health agencies|url=https://blog.google/inside-google/company-announcements/apple-google-exposure-notification-api-launches/|date=2020-05-20|website=Google|language=en|access-date=2020-05-21}}</ref><ref>{{Cite web|title=ExposureNotification {{!}} Apple Developer Documentation|url=https://developer.apple.com/documentation/exposurenotification|website=developer.apple.com|access-date=2020-05-21}}</ref><ref>{{Cite web|title=Exposure Notifications: Helping fight COVID-19 - Google|url=https://www.google.com/intl/en_us/covid19/exposurenotifications/|access-date=2020-07-31|website=Exposure Notifications: Helping fight COVID-19 - Google|language=en}}</ref> The {{w|application programming interface}} is released to in at least 22 countries around the world and is aimed to be used by nations' health authorities to build their own apps.<ref>{{cite web |last1=Pinkstone |first1=Joe |title=Apple and Google launch their coronavirus contact-tracing software |url=https://www.dailymail.co.uk/sciencetech/article-8340911/Apple-Google-launch-coronavirus-contact-tracing-software.html |website=Mail Online |access-date=2 February 2021 |date=20 May 2020}}</ref> || Worldwide

| 2020 || May 29 || Education || The University of Washington’s Northwest Center for Public Health Practice launches a free, online course to provide training for contact tracers.<ref>{{cite web |title=UW launches online training for contact tracing to help fight COVID-19 |url=https://www.washington.edu/news/2020/05/29/uw-launches-online-training-for-contact-tracing-to-help-fight-covidCOVID-19/ |website=UW News |access-date=11 April 2021 |language=en}}</ref> || {{w|United States}}

| 2020 || May 28 || {{w|Mobile app}} launch || Latvia launches Apturi Covid, becoming the first country to launch a contact tracing app using the newly-available exposure notification APIs by Apple and Google. The voluntary, decentralized, and fully [[w:General Data Protection Regulation|GDPR]]-compliant app uses {{w|Bluetooth}} technology to identify other nearby devices that also have the app installed. The app notifies users if they have been in the proximity of 2 meters to an individual for more than 15 minutes who has tested positive for COVID-19. <ref>{{cite web |title=Latvia to launch Google-Apple friendly coronavirus contact tracing app |url=https://www.reuters.com/article/us-health-coronavirus-tech-latvia/latvia-to-launch-google-apple-friendly-coronavirus-contact-tracing-app-idUSKBN23118I |website=Reuters |access-date=3 February 2021 |language=en |date=25 May 2020}}</ref> Apturi Covid<ref>{{cite web |title=Latvia launches the first publicly available contact tracing app |url=https://labsoflatvia.com/en/news/the-first-contact-tracing-app |website=labsoflatvia.com |access-date=6 December 2020}}</ref> || {{w|Latvia}}

| 2020 || June 1 || {{w|Mobile app}} launch || {{w|Immuni}} is launched in {{w|Italy}} as the official COVID-19 contact-tracing app, built on the framework developed by Apple and Google to track infections.<ref>{{cite web |title=IMMUNI APP available for downloading on the APPLE and GOOGLE stores |url=https://innovazione.gov.it/app-immuni-available-from-today/ |website=innovazione.gov.it |access-date=6 December 2020}}</ref><ref name="Streita">{{cite web |last1=Staff |first1=Reuters |title=Italy launches COVID-19 contact-tracing app amid privacy concerns |url=https://www.reuters.com/article/us-health-coronavirus-italy-app/italy-launches-covidCOVID-19-contact-tracing-app-amid-privacy-concerns-idUSKBN2383EW |website=Reuters |access-date=20 January 2021 |language=en |date=1 June 2020}}</ref><ref>{{cite web |title=Italy's 'Immuni' COVID-19 contact tracing app uses Google, Apple tech |url=https://www.engadget.com/italy-coronavirus-contact-tracing-app-apple-google-covidCOVID-19-212811596.html |website=Engadget |access-date=3 February 2021 |language=en}}</ref> || {{w|Italy}}

| 2020 || June 4 || {{w|Database}} launch || The Argentine Government creates a COVID-19 database with the purpose to process the data generated through the official contact tracing app, facilitating greater state control of the pandemic.<ref name="Argencuid">{{cite web |title=The Argentine Government Created COVID-19 Database |url=https://www.marval.com/publicacion/el-gobierno-nacional-creo-la-base-de-datos-covidCOVID-19-13684&lang=en |website=www.marval.com |access-date=20 January 2021}}</ref> || {{w|Argentina}}

| 2020 || June 5 || {{w|Mobile app}} launch || The {{w|Nigerian National Petroleum Corporation}} reveals having developed a CovidCOVID-19 contact-tracing application to be deployed in all its locations across the {{w|Nigeria}}.<ref name="lppnopsco">{{cite web |title=NNPC Develops CovidCOVID-19 Contact Tracing App |url=https://www.rigzone.com/news/nnpc_develops_covid19_contact_tracing_app-05-jun-2020-162308-article/ |website=www.rigzone.com |access-date=20 January 2021 |language=en}}</ref> || {{w|Nigeria}}

| 2020 || June 8 || {{w|Mobile app}} launch || COVID-19 app DiagnoseMe is launched by engineers from {{w|Burkina Faso}}.<ref>{{cite web |title=Young engineers from Burkina Faso together with a colleague studying in Wuhan launched DiagnoseMe app to detect symptoms of CovidCOVID-19 |url=https://outride.rs/en/young-engineers-from-burkina-faso-together-with-a-colleague-studying-in-wuhan-launched-diagnoseme-app-to-detect-symptoms-of-covidCOVID-19/ |website=Outriders |access-date=1 February 2021 |date=8 June 2020}}</ref> || {{w|Burkina Faso}}

| 2020 || June 9 || {{w|Mobile app}} launch || Poland releases a new version of the CovidCOVID-19 contact tracing app ProteGO Safe, now adapted to address concerns about privacy. Previously, the official contact-tracing app released by the government spurred debate on privacy and surveillance during the pandemic, with critics seeing ample opportunity for abuse.<ref>{{cite web |title=Poland Rolls Out Privacy-Secure Coronavirus Tracking App |url=https://www.usnews.com/news/technology/articles/2020-06-09/poland-rolls-out-privacy-secure-coronavirus-tracking-app |website=usnews.com |access-date=6 December 2020}}</ref><ref name="Polstalpylt">{{cite web |last1=Staff |first1=Reuters |title=Poland rolls out privacy-secure coronavirus tracking app |url=https://www.reuters.com/article/us-health-coronavirus-poland-tech-idUSKBN23G208 |website=Reuters |access-date=22 January 2021 |language=en |date=9 June 2020}}</ref><ref>{{cite web |title=Coronavirus contact tracing reignites Polish privacy debate |url=https://www.dw.com/en/coronavirus-contact-tracing-reignites-polish-privacy-debate/a-53600913 |website=dw.com |access-date=4 February 2021}}</ref> || {{w|Poland}}

| 2020 || June 10 || {{w|Digital privacy}} || A French ethical hacker claims Pakistan's covidCOVID-19 contact tracing app COVID-19 Gov PK reveals patients' locations, and emphasizes that the software is not a contact tracing app, adding that it "gives access to dashboards for each province and state, you can do a self-assessment, get radius alert, get a popup notification reminding the user of their personal hygiene". The government denies claims.<ref name="chhac">{{cite web |title=French hacker claims Pakistan's COVID-19 contact tracing app reveals patients' locations, govt denies claims- Technology News, Firstpost |url=https://www.firstpost.com/tech/news-analysis/french-hacker-reports-that-pakistan-covidCOVID-19-contact-tracing-app-reveals-patients-location-govt-denies-claims-8468261.html |website=Tech2 |access-date=20 January 2021 |date=10 June 2020}}</ref><ref name="aakistp">{{cite web |title=Pakistan's CovidCOVID-19 App Becomes Laughing Stock as it Fails at Contact Tracing, Privacy |url=https://www.news18.com/news/tech/pakistans-covidCOVID-19-app-becomes-laughing-stock-as-it-fails-at-contact-tracing-privacy-2661271.html |website=News18 |access-date=20 January 2021 |language=en |date=9 June 2020}}</ref> || {{w|Pakistan}}

| 2020 || June 14 || {{w|Mobile app}} launch || The {{w|Saudi Authority for Data and Artificial Intelligence}} (SDAIA) launches Tabaud, a contact-tracing app aimed to track COVID-19. Saudi Arabia becomes one of the latest countries to use the Apple-Google Exposure Notification System. Users can share their information and then contact those having come into contact with. If a user tests positive, a notification would be sent to users who came into close contact with the infected user during the last 14 days.<ref>{{cite web |title=Saudi Arabia releases contact tracing app |url=https://dig.watch/updates/saudi-arabia-releases-contact-tracing-app |website=dig.watch |access-date=3 February 2021}}</ref><ref name="arasauwww">{{cite web |title=Saudi Arabia launches new CovidCOVID-19 tracing app |url=https://www.arabianbusiness.com/politics-economics/448217-saudi-arabia-launches-new-covidCOVID-19-tracing-app |website=arabianbusiness.com |access-date=22 January 2021}}</ref>|| {{w| Saudi Arabia}}

| 2020 || June 15 || {{w|Digital privacy}} || The Norwegian government decides to stop using its COVID-19 contact tracing app after controversial case concerning privacy, and hours before {{w|Amnesty International releases }} released an analysis criticizing the app.<ref name="Norrw">{{cite web |title=Norway halts COVID-19 contact tracing app a major win for privacy |url=https://www.amnesty.org/en/latest/news/2020/06/norway-covid19-contact-tracing-app-privacy-win/ |website=www.amnesty.org |access-date=22 January 2021 |language=en}}</ref> || {{w|Norway}}

| 2020 || June 15 || {{w|Mobile app}} launch || The Uruguyan Government launches CoronavirusUY, which uses {{w|Exposure Notification}} system.<ref>{{cite web |title=App coronavirus UY: cómo descargarla y recibir alertas por COVID-19 |url=https://www.elpais.com.uy/informacion/servicios/app-coronavirus-uy-descargarla-recibir-alertas-covid.html |website=Diario EL PAIS Uruguay |access-date=8 March 2021 |language=spanish}}</ref><ref>{{cite web |title=Red Gealc |url=https://www.redgealc.org/contenido-general/noticias/se-presentaron-las-alertas-de-exposicion-en-la-aplicacion-coronavirus.uy/ |website=Red Gealc |access-date=8 March 2021}}</ref><ref>{{cite web |title=Lanzan app con alerta de exposición al covidCOVID-19 en Uruguay |url=https://www.france24.com/es/20200615-lanzan-app-con-alerta-de-exposici%C3%B3n-al-covidCOVID-19-en-uruguay |website=France 24 |access-date=3 February 2021 |date=15 June 2020}}</ref> || {{w| Uruguay}}

| 2020 || June 16 || {{w|Mobile app}} launch || The {{w|Robert Koch Institute}} in {{w|Germany}} launches the {{w|Corona-Warn-App}}, which is designed to speedily track down new clusters of coronavirus infection as the country's lockdown is relaxed.<ref>{{cite web |title=Germany launches 'best' coronavirus tracing app |url=https://www.dw.com/en/germany-launches-best-coronavirus-tracing-app/a-53825213 |website=dw.com |access-date=6 December 2020}}</ref><ref name="rmanla">{{cite web |last1=Welle (www.dw.com) |first1=Deutsche |title=Germany launches 'best' coronavirus tracing app {{!}} DW {{!}} 16.06.2020 |url=https://www.dw.com/en/germany-launches-best-coronavirus-tracing-app/a-53825213 |website=DW.COM |access-date=19 January 2021}}</ref><ref name="Sleigh"/> The app is launched after a long-drawn discussion about data privacy issues and the related design of the app. The download is voluntary, and information exchange takes place locally on people’s phones without collecting information on a central server about personal identities or locations.<ref name="CovidCOVID-19 contv"/><ref name="vovovo">{{cite web |title=Germany Launches Contact-Tracing, Norway Halts Its System |url=https://learningenglish.voanews.com/a/germany-launches-contact-tracing-norway-halts-its-system/5465402.html |website=VOA |access-date=22 January 2021 |language=en}}</ref> || {{w|Germany}}

| 2020 || June || Policy || {{w|Germany}} mandates contact tracing for all CovidCOVID-19 cases.<ref name="Health Anal"/> || {{w|Germany}}

| 2020 || June 18 || {{w|Mobile app}} launch || {{w|Toronto}} and {{w|New York City}}–based Micron Digital Corp develops BIOS (Biokinetic Interactivity Observation System), a mobile phone application aimed at tracing contacts with potential positive cases anonymously.<ref name="Dhabisob">{{cite web |title=BIOS, anonymous contact tracing app for CovidCOVID-19 |url=https://www.dhakatribune.com/health/coronavirus/2020/06/18/bios-anonymous-contact-tracing-app-for-covidCOVID-19 |website=Dhaka Tribune |access-date=20 January 2021 |date=18 June 2020}}</ref> || {{w|United States}},{{w|Canada}}

| 2020 || June 18 || {{w|Mobile app}} launch || The Danish government launches COVID-19 infection tracing app Smittestop, which notifies citizens who have been in close proximity to a person infected with COVID -19.<ref>{{cite web |title=Denmark launches coronavirus app Smittestop |url=https://cphpost.dk/?p=115021 |website=The Copenhagen Post |access-date=3 February 2021 |language=DK |date=18 June 2020}}</ref> Smittestop<ref>{{cite web |title=Danish COVID-19 infection tracing app (Smittestop) |url=https://oecd-opsi.org/covid-response/danish-covidCOVID-19-infection-tracing-app-smittestop/ |website=oecd-opsi.org |access-date=6 December 2020}}</ref> || {{w| Denmark}}

| 2020 || June 18 || Manual contact tracing || A survey shows that the national coronavirus contact tracing workforce in the {{w|United States}} reaches reached 37,110 workers, tripling 11,142 workers counted six weeks before.<ref>{{cite web |title=As States Reopen, Do They Have The Workforce They Need To Stop Coronavirus Outbreaks? |url=https://www.npr.org/sections/health-shots/2020/06/18/879787448/as-states-reopen-do-they-have-the-workforce-they-need-to-stop-coronavirus-outbre |website=NPR.org |access-date=22 March 2021 |language=en}}</ref> || {{w|United States}}

| 2020 || June 19 || {{w|Mobile app}} launch || Japan launches the COVID-19 Contact-Confirming Application (COCOA), which allows users to know whether or not they had contact with infected persons. It is developed by {{w|Microsoft}}.<ref>{{cite web |last1=Byford |first1=Sam |title=Japan rolls out Microsoft-developed COVID-19 contact tracing app |url=https://www.theverge.com/2020/6/19/21296603/japan-covidCOVID-19-contact-tracking-app-cocoa-released |website=The Verge |access-date=3 February 2021 |language=en |date=19 June 2020}}</ref><ref name="japneoclqtt">{{cite web |title=Japan's coronavirus contact-tracing app launched amid privacy concerns |url=https://www.japantimes.co.jp/news/2020/06/19/national/japan-contact-tracing-app-launched/ |website=The Japan Times |access-date=20 January 2021 |date=19 June 2020}}</ref><ref>{{cite web |title=Effectiveness of the COVID-19 Contact-Confirming Application (COCOA) based on a Multi Agent Simulation |url=https://arxiv.org/abs/2008.13166 |website=arxiv.org |access-date=6 December 2020}}</ref> || {{w|Japan}}

| 2020 || July 7 || {{w|Mobile app}} launch || The {{w|Irish Government}} releases digital contact tracing app {{w|COVID Tracker Ireland}}, which uses {{w|exposure notification}} by {{w|Google}} and {{w|Apple Inc.}}<ref>{{cite web |title=Coronavirus: 1 Death From CovidCOVID-19 In Ireland Today |url=https://www.midlands103.com/news/midlands-news/coronavirus-national-news-tuesday-7th-july-2020/ |website=midlands103.com |access-date=6 December 2020}}</ref> || {{w|Ireland}}

| 2020 || July || Program shutdown || Most states in India abandon contact tracing, as CovidCOVID-19 cases surge in the country. States instead opt for doing mass testing. As a response, experts say one cannot be a replacement for the other.<ref>{{cite web |last1=Saikia |first1=Arunabh |title=CovidCOVID-19: As cases surge in India, most states abandon contact tracing |url=https://scroll.in/article/967223/covidCOVID-19-as-cases-surge-in-india-most-states-abandon-contact-tracing |website=Scroll.in |access-date=26 April 2021}}</ref> || {{w|India}}

| 2020 || July || Policy || {{w|Canada}} mandates contact tracing for all cases of CovidCOVID-19 cases.<ref name="Health Anal">{{cite web |title=Is India doing enough contact tracing in its battle against COVID-19? |url=https://www.ha-asia.com/is-india-doing-enough-contact-tracing-in-its-battle-against-covidCOVID-19/ |website=Health Analytics Asia |access-date=1 June 2021 |date=2020-09-18}}</ref> || {{w|Canada}}

| 2020 || July 21 || Performance || An article by Christie Aschwanden on <code>scientificamerican.com</code> reorts reports on contact tracing i in the United States being severely underused, and states that, despite tracing’s success in other countries, the U.S. government has failed to adequately fund or apply the tool.<ref name="dsdsdsdf">{{cite web |last1=Aschwanden |first1=Christie |title=Contact Tracing, a Key Way to Slow COVID-19, Is Badly Underused by the U.S. |url=https://www.scientificamerican.com/article/contact-tracing-a-key-way-to-slow-covidCOVID-19-is-badly-underused-by-the-u-s/ |website=Scientific American |access-date=13 April 2021 |language=en}}</ref> || {{w|United States}}

| 2020 || July 27 || {{w|Mobile app}} launch || Croatia launches contact tracing app STOP COVID-19’19, a voluntary, cyber-secured application, using only temporary and anonymous data. It does not use geolocation tracking, and there is no collection of user’s data, with the app success expected to be based on "conscientious and solidary participation of citizens”.<ref>{{cite web |title=Croatia Launches New 'STOP COVID-19' Tracing App |url=https://bird.tools/live_updates/croatia-launches-new-stop-covidCOVID-19-tracing-app/ |website=BIRD |access-date=3 February 2021}}</ref> || {{w| Croatia}}

| 2020 || July 30 || {{w|Mobile app}} launch || StopCOVID NI launches in {{w|Northern Ireland}}, which becomes the first region in the {{w|united United Kingdom}} to launch a COVID-19 tracker app.<ref>{{cite web |title=CovidCOVID-19: Tracing app is released for NI |url=https://www.bbc.com/news/uk-northern-ireland-53599514 |website=bbc.com |access-date=6 December 2020}}</ref><ref>{{cite web |title=Northern Ireland launches UK's first COVID-19 tracker app |url=https://www.reuters.com/article/us-health-coronavirus-nireland-app/northern-ireland-launches-uks-first-covidCOVID-19-tracker-app-idUSKCN24W1UX |website=Reuters |access-date=3 February 2021 |language=en |date=31 July 2020}}</ref> || {{w|United Kingdom}} ({{w|Northern Ireland}})

| 2020 || July 31 || {{w|Mobile app}} launch || COVID-19 tracking app {{w|COVID Alert}} is launched in {{w|Canada}} by the federal government. Code from {{w|Shopify}} was used and app security was built with assistance of {{w|Blackberry Inc}}. The technology is developed with {{w|Apple Inc}} and {{w|Google}}.<ref>{{cite web |title=Positive test but no code to enter into COVID Alert exposure app? We want to hear from you |url=https://www.ctvnews.ca/health/coronavirus/positive-test-but-no-code-to-enter-into-covid-alert-exposure-app-we-want-to-hear-from-you-1.5146359 |website=ctvnews.ca |access-date=6 December 2020}}</ref><ref>{{cite web |title=Canada launches COVID-19 tracking app — but only in Ontario |url=https://globalnews.ca/news/7239119/coronavirus-exposure-notification-app-covidCOVID-19-ontario/ |website=Global News |access-date=3 February 2021}}</ref><ref>{{cite web |title=Co-designing with the app generation: Findings and collaboration opportunities for research, design, and policy around digital youth |url=https://theconversation.com/canadas-covid-alert-app-is-a-case-of-tech-driven-bad-policy-design-144448 |website= The Conversation |access-date=3 February 2021 |pages=1–3 |doi=10.1002/meet.2014.14505101006 |date=2014}}</ref><ref name="ohansey">{{cite web |last1=Johnson |first1=Kelsey |title=Canada launches COVID-19 contact tracing app as restrictions loosen |url=https://www.reuters.com/article/healthcoronavirus-canada/canada-launches-covidCOVID-19-contact-tracing-app-as-restrictions-loosen-idUSL2N2F12N6 |website=Reuters |access-date=22 January 2021 |language=en |date=31 July 2020}}</ref> || {{w|Canada}}

| 2020 || End of July || Education || More than half a million people are enrolled for a free online CovidCOVID-19 contact-tracing course offered by {{w|Johns Hopkins University}}.<ref name="nejm.org">{{cite web |title=“A Menace to the Public Health” — Contact Tracing and the Limits of Persuasion |url=https://www.nejm.org/doi/full/10.1056/NEJMp2021887 |website=nejm.org |access-date=5 December 2020}}</ref> || {{w|United States}}

| 2020 || August 5 || Protocol integration || {{w|Brazil}} integrates Apple-Google {{w|exposure notification}} tech into its federal government-backed CovidCOVID-19 smartphone app.<ref name="ratesa">{{cite web |last1=Mari |first1=Angelica |title=Brazil integrates Apple-Google exposure notification tech into coronavirus app |url=https://www.zdnet.com/article/brazil-integrates-apple-google-exposure-notification-tech-into-coronavirus-app/ |website=ZDNet |access-date=20 January 2021 |language=en}}</ref> || {{w|Brazil}}

| 2020 || August 12 || Userbase || The Indian government-promoted app, Aarogya Setu reaches 150 million downloads, after four months of its commencement.<ref name="BW Businessworldvv">{{cite web |last1=Bureau |first1=BW Online |title=Contact tracing app Aarogya Setu reaches 150 million downloads in 4 months |url=http://www.businessworld.in/article/Contact-tracing-app-Aarogya-Setu-reaches-150-million-downloads-in-4-months-/12-08-2020-307829/ |website=BW Businessworld |access-date=26 April 2021 |language=en}}</ref> || {{w|India}}

| 2020 || August 13 || {{w|Mobile app}} launch || The government of {{w|Ecuador}} launches app that notifies users contact with a {{w|COVID-19 case}} cases.<ref>{{cite web |title=Nueva 'app' que notifica el contacto con un caso de covidCOVID-19 está lista en Ecuador |url=https://www.elcomercio.com/actualidad/ecuador-covid-app-contacto-contagiados.html |website=El Comercio |access-date=3 February 2021}}</ref> || {{w|Ecuador}}

| 2020 || August 18 || {{w|Mobile app}} launch || The Slovenian Public Administration Minister launches contact tracing app OstaniZdrav (StayWell),for [[w:Android (operating system)|Android]] users.<ref>{{cite web |title=Slovenia Releases Contact Tracing App for Android Users |url=https://www.total-slovenia-news.com/lifestyle/6784-slovenia-releases-contact-tracing-app-for-android-users |website=www.total-slovenia-news.com |access-date=3 February 2021 |language=en-gb}}</ref>|| {{w|Slovenia}}

| 2020 || August 20 || {{w|Mobile app}} launch || Estonia launches free COVID-19 exposure notification app Hoia, which is optional and not mandatory, and has the purpose to inform close contacts of those infected with the coronavirus , and to provide them with initial instructions on how to proceed.<ref>{{cite web |title= Estonia launches coronavirus exposure notification app 'HOIA' |url=https://news.err.ee/1125119/feature-estonia-launches-coronavirus-exposure-notification-app-hoia |website=news.err.ee |access-date=6 December 2020}}</ref><ref>{{cite web |last1=ERR |first1=ERR News | |title=Estonia launches coronavirus exposure notification app 'HOIA' |url=https://news.err.ee/1125119/feature-estonia-launches-coronavirus-exposure-notification-app-hoia |website=ERR |access-date=3 February 2021 |language=en |date=20 August 2020}}</ref> || {{w|Estonia}}

| 2020 || August 31 || {{w|Mobile app}} launch || Finland launches smartphone app Koronavilkku, as part of the Government's test, trace, isolate and treat strategy.<ref>{{cite web |title=Koronavilkku has now been published - download the app to your phone! |url=https://thl.fi/en/web/thlfi-en/-/koronavilkku-has-now-been-published-download-the-app-to-your-phone- |website=thl.fi |access-date=16 January 2021}}</ref><ref>{{cite web |title=The Finnish CovidCOVID-19 app Koronavilkku has now been published – download the app to your phone! |url=https://www.solita.fi/en/the-finnish-covidCOVID-19-app-koronavilkku-has-now-been-published/ |website=solita.fi |access-date=16 January 2021}}</ref><ref>{{cite web |title=It's here: Finland's coronavirus tracing app |url=https://yle.fi/uutiset/osasto/news/its_here_finlands_coronavirus_tracing_app/11519429 |website=Yle Uutiset |access-date=3 February 2021 |language=en}}</ref> In one day, Downloads of this app quickly reach 1 million, corresponding to nearly one fifth of Finland's population of 5.52 million.<ref>{{cite web |title=Coronavirus app downloads quickly reach 1 million |url=https://yle.fi/uutiset/osasto/news/coronavirus_app_downloads_quickly_reach_1_million/11521081 |website=Yle Uutiset |access-date=5 April 2021 |language=en}}</ref><ref>{{cite web |title=It's here: Finland's coronavirus tracing app |url=https://yle.fi/uutiset/osasto/news/its_here_finlands_coronavirus_tracing_app/11519429 |website=Yle Uutiset |access-date=5 April 2021 |language=en}}</ref> || {{w|Finland}}

| 2020 || September 1 || {{w|Mobile app}} launch || South Africa launches COVID Alert SA, the government’s official Bluetooth contact-tracing app. It’s built on the Apple–Google {{w|Exposure Notification}}s application programmable interface (API).<ref>{{cite web |title=Download the app – Every COVID Alert SA app download means more lives saved in SA |url=https://sacoronavirus.co.za/2020/09/01/download-the-app-every-covid-alert-sa-app-download-means-more-lives-saved-in-sa/ |website=sacoronavirus.co.za |access-date=16 January 2021}}</ref><ref>{{cite web |title=COVID-19 Alert: South Africa to Move to Level 1 Restrictions from Sept. 21 |url=https://www.worldaware.com/covidCOVID-19-alert-south-africa-move-level-1-restrictions-sept-21 |website=worldaware.com |access-date=16 January 2021}}</ref> || {{w|South Africa}}

| 2020 || September 3 || {{w|Mobile app}} launch || The {{w|Government of Philippines}} launches StaySafe.ph, a contact tracing application aimed to trace CovidCOVID-19 close contacts and warn the public on “nearby danger”.<ref name="Safetataqhr">{{cite web |title=StaySafe.ph seen to boost contact tracing efforts |url=https://www.pna.gov.ph/articles/1114332 |website=www.pna.gov.ph |access-date=20 January 2021 |language=en}}</ref> || {{w|Philippines}}

| 2020 || September 3 || {{w|Mobile app}} launch || COVID Alert is launched in {{w|South Africa}}. The app uses {{w|Exposure Notification}} system created by Apple and Google, and Bluetooth technology to notify users if they have been in contact with {{w|COVID-19}}.<ref name="Matedestina">{{cite web |last1=Matengo |first1=Dinah |title=South Africa launches free COVID-19 contact tracing app |url=https://africa.cgtn.com/2020/09/03/south-africa-launches-new-app-to-prevent-second-wave-of-covidCOVID-19/ |website=CGTN Africa |access-date=20 January 2021}}</ref> || {{w|South Africa}}

| 2020 || September 10 || {{w|Mobile app}} launch || Protect Scotland launches in Scotland as a COVID-19 contact-tracing application. The Scottish government says that the software supports the Test and Protect system and is "another tool in the fight against CovidCOVID-19".<ref>{{cite web |title=Scotland's Covid contact tracing app downloaded more than 600,000 times |url=https://www.bbc.com/news/uk-scotland-54098960 |website=bbc.com |access-date=16 January 2021}}</ref><ref name="lausco">{{cite web |title=Scotland launches contact-tracing app |url=https://iapp.org/news/a/scotland-launches-contact-tracing-app/ |website=iapp.org |access-date=22 January 2021}}</ref> || {{w|United Kingdom}} ({{w|Scotland}})

| 2020 || September 10 || {{w|Mobile app}} launch || Guam Covid Alert is launched in {{w|Guam}}, which becomes the first U.S. Territory to launch an This exposure notification app is developed by engineers with Apple, Google, and the PathCheck Foundation that uses Bluetooth technology for digital contact tracing.<ref>{{cite web |title=Guam launches COVID Alert mobile app to aid contact tracing efforts |url=https://www.pncguam.com/guam-launches-covid-alert-mobile-app-to-aid-contact-tracing-efforts/ |website=pncguam.com |access-date=16 January 2021}}</ref><ref>{{cite web |title=Guam Covid Alert |url=https://guamcovidalert.guam.gov/launching-soon/ |website=guamcovidalert.guam.gov|access-date=16 January 2021}}</ref>|| {{w|Guam}}

| 2020 || September 17 || {{w|Mobile app}} launch || eRouška (eMask) is launched in the {{w|Czech republic}} as a contact tracing app using . It uses the {{w|Exposure Notification}} protocol.<ref>{{cite web |title=Chráním sebe, chráním tebe! |url=https://erouska.cz/ |website=erouska.cz |access-date=16 January 2021}}</ref><ref>{{cite web |title=eRouška 2.0: Co to je, jak se používá a proč se nemusíte bát o soukromí |url=https://www.mobilmania.cz/clanky/erouska-20-co-to-je-jak-se-pouziva-a-proc-se-nemusite-bat-o-soukromi/sc-3-a-1349357/default.aspx |website=mobilmania.cz |access-date=16 January 2021}}</ref> || {{w|Czech Republic}}

| 2020 || September 24 || {{w|Mobile app}} launch || {{w|NHS COVID-19}} app launches in {{w|England}} and {{w|Wales}}. It uses the {{w|exposure Exposure Notification}}protocol.<ref>{{cite web |title=NHS coronavirus app to launch in England and Wales on 24 September |url=https://www.theguardian.com/world/2020/sep/11/nhs-coronavirus-app-launch-england-wales-24-september |website=theguardian.com |access-date=17 January 2021}}</ref> || {{w|United Kingdom}} ({{w|England}}, {{w|Wales}})

| 2020 || September 30 || {{w|Mobile app}} launch || COVID Alert NY is launched in {{w|New York State}}. The app notifies users of potential COVID-19 exposure while maintaining user privacy and security. It is based on {{w|COVID Tracker Ireland}}.<ref>{{cite web |last1=Gorey |first1=Colm |title=NearForm contact-tracing apps launched in New York and New Jersey |url=https://www.siliconrepublic.com/enterprise/new-york-new-jersey-contact-tracing-apps-nearform |website=Silicon Republic |access-date=11 March 2021 |language=en |date=2 October 2020}}</ref><ref>{{cite web |title=Governor Murphy and Governor Cuomo Launch Exposure Notification Apps to Help Stop the Spread of CovidCOVID-19 |url=https://www.nj.gov/governor/news/news/562020/20201001a.shtml |website=nj.gov |access-date=17 January 2021}}</ref> || {{w|United States}} ([[w:New York (state)|New York]])

| 2020 || September 30 || Study || A large contact tracing study in India shows that COVID-19 is transmitted mainly by "superspreaders", which consists in a small percentage of infected people.<ref>{{cite web |last1=Service |first1=Tribune News |title=Largest contact tracing study in India shows Covid transmitted mainly by ‘superspreaders’ |url=https://www.tribuneindia.com/news/nation/largest-contact-tracing-study-in-india-shows-covid-transmitted-mainly-by-superspreaders-149351 |website=Tribuneindia News Service |access-date=26 April 2021 |language=en}}</ref> || {{w|India}}

| 2020 || October 8 || {{w|Mobile app}} launch || Kazakhstan launches the Saqbol mobile app, a COVID-19 contact tracing app designed to control the spread of the infection and timely locate the virus’s hotspots. Infected users can anonymously inform others on their contacts in the last 14 days for 15 minutes and in a distance of 2 meters. According to the developers, the records of interaction between devices are encoded.<ref>{{cite web |title=Kazakhstan launches COVID-19 contact tracing app |url=https://www.inform.kz/en/kazakhstan-launches-covidCOVID-19-contact-tracing-app_a3703810 |website=www.inform.kz |access-date=2 February 2021 |language=en |date=8 October 2020}}</ref> || {{w|Kazakhstan}}

| 2020 || October 10 || {{w|Mobile app}} launch || Dutch COVID-19 notification app ‘CoronaMelder’ CoronaMelder is launched. It is designed according to the privacy by design requirements.<ref>{{cite web |title=Dutch coronavirus app rolls out nationally Oct. 10 after months of talks |url=https://nltimes.nl/2020/10/06/dutch-coronavirus-app-rolls-nationally-oct-10-months-talks |website=nltimes.nl |access-date=17 January 2021}}</ref> || {{w|Netherlands}}

| 2020 || October 31 || Performance || {{w|Taiwan}}'s CovidCOVID-19 response is considered to be a success, cumulating over six months without a locally transmitted case. It is considered to be the only major country having so far been able to keep community transmission of Covid {{w|COVID-19}} eliminated. Its contact tracing deployment on average linked 20 to 30 contacts to each confirmed case. In extreme situations, the government tracked down as many as 150 contacts. All contacts would undergo a 14-day home quarantine, even if they test negative.<ref>{{cite web |title=How Taiwan’s COVID response became the world’s envy |url=https://fortune.com/2020/10/31/taiwan-best-covid-response/ |website=Fortune |access-date=26 April 2021 |language=en}}</ref><ref>{{cite web |title=Bloomberg - Are you a robot? |url=https://www.bloomberg.com/opinion/articles/2020-04-22/taiwan-offers-the-best-model-for-coronavirus-data-tracking |website=www.bloomberg.com |access-date=26 April 2021}}</ref> || {{w|Taiwan}}

| 2020 || November 9 || {{w|Mobile app}} launch || MI COVID Alert launches in Michigan. The app is designed to notify users if they have potentially been in close contact with infected people.<ref>{{cite web |title=COVID-19 Alert App notifies users if they have been in close contact with infected people |url=https://wwmt.com/news/local/covidCOVID-19-alert-app-notifies-users-if-they-have-been-in-close-contact-with-infected-people |website=wwmt.com |access-date=17 January 2021}}</ref> || {{w|United States}} ({{w|Michigan}})

| 2020 || December 3 || Partnership || {{w|Delta Airlines}} partners with the {{w|Centers for Disease Control and Prevention}} for international traveler contact tracing, and aimed . The partnership aims at keeping international customers informed of potential {{w|COVID-19 }} exposure.<ref>{{cite web |title=Delta partners with CDC for international traveler contact tracing |url=https://www.usatoday.com/story/travel/airline-news/2020/12/03/delta-air-line-launches-coronavirus-contact-tracing-cdc/3807358001/ |website=usatoday.com |access-date=4 December 2020}}</ref><ref>{{cite web |title=Delta Partners With CDC To Become First U.S. Airline To Launch Contact Tracing Program |url=https://www.baynews9.com/fl/tampa/news/2020/12/03/delta-air-lines-cdc-contact-tracing-coronavirus-covid |website=baynews9.com |access-date=4 December 2020}}</ref> || {{w|United States}}

| 2020 || December 7 || {{w|Mobile app}} launch || CA Notify is launched in {{w|California}}, allowing users who test positive to anonymously inform those with whom they have been in close proximity that they may have been exposed. The app is designed to optimize privacy, it doesn’t use location data or identify the people users come into contact with.<ref>{{cite web |last1=Gardiner |first1=Dustin |title=California launches app to alert people whose contacts test positive for coronavirus |url=https://www.sfchronicle.com/politics/article/California-launches-app-to-alert-people-whose-15781904.php |website=San Francisco Chronicle |access-date=3 February 2021 |date=8 December 2020}}</ref><ref>{{cite web |last1=Sandler |first1=Rachel |title=California Launches CovidCOVID-19 Contact Tracing App From Apple, Google |url=https://www.forbes.com/sites/rachelsandler/2020/12/07/california-launches-covidCOVID-19-contact-tracing-app-from-apple-google/?sh=4d3f9354167a |website=Forbes |access-date=11 March 2021 |language=en}}</ref><ref>{{cite web |title=California launches app to alert people whose contacts test positive |url=https://www.msn.com/en-us/money/other/california-launches-app-to-alert-people-whose-contacts-test-positive-for-coronavirus/ar-BB1bI2RT |website=www.msn.com |access-date=11 March 2021}}</ref><ref>{{cite web |title=California Unveils Mobile App to Notify Users of Possible Coronavirus Exposure |url=https://www.nbcbayarea.com/news/coronavirus/california-unveils-smartphone-tool-to-trace-virus-cases/2416711/ |website=NBC Bay Area |access-date=11 March 2021}}</ref> || {{w|California}}

| 2020 || December 21 || {{w|Mobile app}} launch || Smittestopp launches in Norway, replacing a version of the app that was suspended earlier in the year due to scrutiny from the local {{w|Norwegian Data Protection Authority}}.<ref>{{cite web |title=NIPH starts work on a new solution for digital contact tracing |url=https://www.fhi.no/en/news/2020/niph-starts-work-on-a-new-solution-for-digital-contact-tracing/ |website=Norwegian Institute of Public Health |access-date=11 March 2021 |language=en}}</ref><ref>{{cite web |title=Uden konkurrence: Netcompany vinder ordren på en ny norsk smittestop-app |url=https://www.computerworld.dk/art/253847/uden-konkurrence-netcompany-vinder-ordren-paa-en-ny-norsk-smittestop-app |website=Computerworld |access-date=11 March 2021 |language=da |date=21 October 2020}}</ref> Within two days, the new infection control app would be is downloaded 158,700 times, with already 41 people reporting that they are infected.<ref>{{cite web |last1=Capar |first1=Robin-Ivan |title=Around 160,000 Norwegians downloaded the new Smittestopp corona app |url=https://norwaytoday.info/news/around-160000-norwegians-downloaded-the-new-smittestopp-corona-app/ |website=Norway Today |access-date=5 March 2021 |date=25 December 2020}}</ref> || {{w|Norway}}

| 2020 || December 23 || Public opinion || An article on privacy and surveillance in the COVID-19 Pandemic reports that U.S. citizens continue to be deeply skeptical of contact tracing technology and hesitant to adopt other preventive measures.<ref>{{cite web |title=Study: Americans skeptical of COVID-19 contact tracing apps |url=https://news.cornell.edu/stories/2021/01/study-americans-skeptical-covidCOVID-19-contact-tracing-apps |website=Cornell Chronicle |access-date=3 February 2021 |language=en}}</ref> || {{w|United States}}

| 2021 || January 21 || Performance || Research conducted in Germany shows that contact tracing “Corona app Corona Warn-App” App is underused by those who have heightened risk of exposure to COVID-19.<ref>{{cite web |title=How effective is Germany’s COVID-19 contact tracing app? |url=https://www.hertie-school.org/en/news/detail/content/how-effective-is-germanys-covidCOVID-19-contact-tracing-app |website=Hertie School |access-date=14 April 2021 |language=en}}</ref> || {{w|Germany}}

| 2021 || January 28 || {{w|Digital privacy}} || The Public Health Emergency Privacy Act is introduced in the {{w|United States}} as a legislation meant to tackle the privacy and security issues tied to technologies used for the CovidCOVID-19 response, including contact tracing apps.<ref>{{cite web |title=Proposed Public Health Emergency Bill Targets COVID-19 Tech Privacy |url=https://healthitsecurity.com/news/proposed-public-health-emergency-bill-targets-covidCOVID-19-tech-privacy |website=HealthITSecurity |access-date=3 February 2021 |date=2 February 2021}}</ref> || {{w|United States}}

| 2021 || March 5 || Public opinion || Cross-national online survey on public opinion towards COVID-19 contact tracing apps is conducted in {{w|China}}, revealing that approval rates in the country exceed those in western countries by a significant margin.<ref name="CovidCOVID-19 contv"/> || {{w|China}}|-| 2021 || March 10 || Education || {{w|Novosibirsk State University}} partners with {{w|Johns Hopkins University}} and launches Russian version of Coursera COVID-19 Contact Tracing Course by JHU.<ref>{{cite web |title=Novosibirsk State University - NSU Launches Russian Version of Johns Hopkins University Coursera COVID-19 Contact Tracing Course |url=https://english.nsu.ru/news-events/news/research/nsu-launches-russian-version-of-johns-hopkins-university-coursera-COVID-19-contact-tracing-course-/ |website=english.nsu.ru |access-date=30 June 2021 |language=en}}</ref> || {{w|Russia}}

| 2021 || April 19 || Performance || COVID-19 response in South Korea is considered to be successful at this point, as a result of effective implementation of comprehensive testing and contact tracing. The country is recognized for having implemented an elaborate contact tracing program.<ref>{{cite web |last1=Scott |first1=Dylan |title=South Korea’s CovidCOVID-19 success story started with failure |url=https://www.vox.com/22380161/south-korea-covidCOVID-19-coronavirus-pandemic-contact-tracing-testing |website=Vox |access-date=1 June 2021 |language=en |date=2021-04-19}}</ref> || {{w|South Korea}}

| 2021 || June 3 || Performance || Study published in ''{{w|JAMA Network Open}}'' reports hat contact tracing in the United States was largely ineffective in slowing COVID-19 virus transmission and improving population health, mostly due to insufficient interview responses.<ref>{{cite journal |last1=Lash |first1=R. Ryan |last2=Moonan |first2=Patrick K. |last3=Byers |first3=Brittany L. |last4=Bonacci |first4=Robert A. |last5=Bonner |first5=Kimberly E. |last6=Donahue |first6=Matthew |last7=Donovan |first7=Catherine V. |last8=Grome |first8=Heather N. |last9=Janssen |first9=Julia M. |last10=Magleby |first10=Reed |last11=McLaughlin |first11=Heather P. |last12=Miller |first12=James S. |last13=Pratt |first13=Caroline Q. |last14=Steinberg |first14=Jonathan |last15=Varela |first15=Kate |last16=Anschuetz |first16=Greta L. |last17=Cieslak |first17=Paul R. |last18=Fialkowski |first18=Veronica |last19=Fleischauer |first19=Aaron T. |last20=Goddard |first20=Clay |last21=Johnson |first21=Sara Jo |last22=Morris |first22=Michelle |last23=Moses |first23=Jill |last24=Newman |first24=Allison |last25=Prinzing |first25=Lauren |last26=Sulka |first26=Alana C. |last27=Va |first27=Puthiery |last28=Willis |first28=Matthew |last29=Oeltmann |first29=John E. |last30=Clayton |first30=Joshua L. |last31=Forbes |first31=Heather Bailey |last32=DeLuca |first32=Nick |last33=Haddad |first33=Maryam |last34=Harris |first34=Gibbie |last35=Hayes |first35=Susan |last36=Hendrickson |first36=Blake |last37=Honein |first37=Margaret A. |last38=Hogben |first38=Matthew |last39=Jones |first39=Amanda |last40=Knott |first40=Catherine J. |last41=Leman |first41=Richard L. |last42=McCurdy |first42=Stephen A. |last43=McGrath |first43=Alana |last44=Moore |first44=Zack S. |last45=Ortbahn |first45=Dustin |last46=Paritala |first46=Sai |last47=Pevzner |first47=Eric S. |last48=Pierce |first48=Rebecca A. |last49=Raghunathan |first49=Pratima L. |last50=Rains |first50=Catherine |last51=Rose |first51=Dale A. |last52=Safranek |first52=Tom |last53=Sathya |first53=Bhavani |last54=Tan |first54=Christina G. |last55=Taylor |first55=Melanie |last56=Thorpe |first56=Phoebe G. |last57=Walke |first57=Henry |last58=Weisbeck |first58=Andee |title=COVID-19 Case Investigation and Contact Tracing in the US, 2020 |journal=JAMA Network Open |date=2021-06-03 |volume=4 |issue=6 |pages=e2115850 |doi=10.1001/jamanetworkopen.2021.15850}}</ref><ref>{{cite web |title=COVID-19 Contact Tracing Had Little Impact on Population Health |url=https://healthitanalytics.com/news/covidCOVID-19-contact-tracing-had-little-impact-on-population-health |website=HealthITAnalytics |access-date=29 June 2021 |date=2021-06-08}}</ref> || {{w|United States}}