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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]
While HCoV-OC229E is retained as a valid species, HCoV-OC43 was merged with Porcine hemagglutinating encephalomyelitis virus (discovered in 1962 [67]), Bovine coronavirus (discovered in 1973 [68]), Human enteric coronavirus (discovered in 1975 [69]), Equine coronavirus (discovered in 2000 [70]) and Canine respiratory coronavirus (discovered in ...
SARS-CoV-2 is the virus that causes coronavirus disease 2019 (COVID-19). Some have been stated, to be of particular importance due to their potential for increased transmissibility, [1] increased virulence, or reduced effectiveness of vaccines against them. [2] [3] These variants contribute to the continuation of the COVID-19 pandemic.
On 26 November at an emergency meeting in Geneva, Switzerland WHO's Technical Advisory Group on SARS-CoV-2 Virus Evolution designated PANGO lineage B.1.1.529 a variant of concern (VOC) and gave it the designation Omicron (skipping Nu and Xi, the next letters in the Greek alphabet in keeping with its nomenclature protocol introduced for the Delta variant).
The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 , began with an outbreak of COVID-19 in Wuhan, China, in December 2019. It spread to other areas of Asia, and then worldwide in early 2020.
SARS-CoV-2 is the seventh known coronavirus to infect people, after 229E, NL63, OC43, HKU1, MERS-CoV, and the original SARS-CoV. [105] Like the SARS-related coronavirus implicated in the 2003 SARS outbreak, SARS‑CoV‑2 is a member of the subgenus Sarbecovirus (beta-CoV lineage B). [106] [107] Coronaviruses undergo frequent recombination. [108]
A fast-moving debate over virus evolution illustrates how not-yet-vetted reports about the course of the coronavirus outbreak can go, um, viral — and how important social media channels have ...
Transmission and life-cycle of SARS-CoV-2 causing COVID-19. Coronaviruses vary significantly in risk factor. Some can kill more than 30% of those infected, such as MERS-CoV, and some are relatively harmless, such as the common cold. [49] Coronaviruses can cause colds with major symptoms, such as fever, and a sore throat from swollen adenoids. [91]