The timeline of the COVID-19 pandemic lists the articles containing the chronology and epidemiology of SARS-CoV-2,[1] the virus that causes the coronavirus disease 2019 (COVID-19) and is responsible for the COVID-19 pandemic.
The first human cases of COVID-19 occurred in Wuhan, People's Republic of China, on or about 16 November 2019.[2] The first human case in the United States was on 21 January 2020. The World Health Organization declared the COVID-19 outbreak a Public Health Emergency of International Concern on 30 January 2020, and a pandemic on 11 March 2020.[3][4] As of this edit (February 2024[update]) it is still unknown on precisely how humans in mainland China were initially or previously infected with the virus known as SARS-CoV-2.[5]
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