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The rapidly growing infection rate of COVID‑19 worldwide during 2020 stimulated international alliances and government efforts to urgently organize resources to make multiple vaccines on shortened timelines, [11] with four vaccine candidates entering human evaluation in March (see the table of clinical trials started in 2020, below). [2] [12]
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]
How COVID‑19 vaccines work. The video shows the process of vaccination, from injection with RNA or viral vector vaccines, to uptake and translation, and on to immune system stimulation and effect. Part of a series on the COVID-19 pandemic Scientifically accurate atomic model of the external structure of SARS-CoV-2. Each "ball" is an atom. COVID-19 (disease) SARS-CoV-2 (virus) Cases Deaths ...
It indicated that people can be symptom-free for several days while the coronavirus is incubating, increasing the risk of contagious infection without forewarning signs. According to their data, 13 of the initial 41 cases of the novel coronavirus had no link with the wet market in Wuhan purported to be the origin of the disease, and the ...
Vaccines continue to be recommended for Omicron and its subvariants. Professor Paul Morgan, immunologist at Cardiff University said, "I think a blunting rather than a complete loss [of immunity] is the most likely outcome. The virus can't possibly lose every single epitope on its surface, because if it did that spike protein couldn't work any ...
Friday's announcement indicates that timeline is still on track, though now Pfizer is testing a third dose of its mRNA vaccine for the 2-to-4 age group and observing and analyzing that data before ...
This article documents the chronology and epidemiology of SARS-CoV-2 in January 2021, the virus which causes the coronavirus disease 2019 and is responsible for the COVID-19 pandemic. The first human cases of COVID-19 were identified in Wuhan , China , in December 2019.