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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 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 17 November 2019. [2]
This article documents the chronology and epidemiology of SARS-CoV-2 in 2019, the virus that causes coronavirus disease 2019 and is responsible for the COVID-19 pandemic. The first human cases of COVID-19 known to have been identified were in Wuhan, Hubei, China, in December 2019.
By late November 2019, coronavirus disease 2019 had broken out in Wuhan, China. [2]As reported in Clinical Infectious Diseases on November 30, 2020, 7,389 blood samples collected between December 13, 2019, and January 17, 2020, by the American Red Cross from normal donors in nine states (California, Connecticut, Iowa, Massachusetts, Michigan, Oregon, Rhode Island, Washington and Wisconsin ...
While COVID-19 refers to the disease and SARS-CoV-2 refers to the virus which causes it, referring to the "COVID-19 virus" has been accepted. [9] [25] [29] Reference to SARS-CoV-2 as "the coronavirus" has become somewhat accepted despite such use implying that there is only one coronavirus species. Similarly, use of "COVID" for the disease (if ...
By March 5, more than 2,750 cases of COVID-19 variants were detected in 47 states; Washington, D.C.; and Puerto Rico. This number consisted of 2,672 cases of the B.1.1.7 variant, 68 cases of the B.1.351 variant, and 13 cases of the P.1 variant. [35]
The species was merged with Rat coronavirus (discovered in 1970 [23]) and Puffinosis coronavirus (discovered in 1982 [59]) as Murine coronavirus in 2009. [ 60 ] 229E and OC43 were collectively named Human respiratory virus but merged as Human coronavirus 229E (HCoV-229E) in 2009 . [ 61 ]
Using such data, estimates of the true number of deaths from COVID-19 worldwide have included a range from 18.2 to 33.5 million (≈27.4 million) by 18 November 2023 by The Economist, [7] [73] as well as over 18.5 million by 1 April 2023 by the Institute for Health Metrics and Evaluation [74] and ≈18.2 million (earlier) deaths between 1 ...
The January 2022 emergence of the Omicron variant, which was first discovered in South Africa, led to record highs in hospitalizations and cases in early 2022, with as many as 1.5 million new infections reported in a single day. [27] By the end of 2022, an estimated 77.5% of Americans had had COVID-19 at least once, according to the CDC. [28]