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The first highly publicized variant of the SARS-CoV-2 virus was called alpha (B.1.1.7). The variant began circulating in Great Britain in late 2020. ... Although the basic symptoms of COVID-19 ...
A COVID-19 vaccine is intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2), the virus that causes coronavirus disease 2019 . Prior to the COVID-19 pandemic, an established body of knowledge existed about the structure and function of coronaviruses causing diseases like severe acute ...
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]
Symptoms of COVID-19. Some less common symptoms of COVID-19 can be relatively non-specific; however the most common symptoms are fever, dry cough, and loss of taste and smell. [1] [22] Among those who develop symptoms, approximately one in five may become more seriously ill and have difficulty in breathing.
“The FLiRT variant appeared in March,” says Tammy Lundstrom, M.D., J.D., the senior vice president at Trinity Health who led their COVID-19 response. “Throughout the COVID-19 era, new ...
A new COVID-19 subvariant, known as XBB.1.16 but often called "Arcturus," has progressively become more viral here in the United States, accounting for 10% of infections through late April.
Zoonotic species such as Severe acute respiratory syndrome-related coronavirus , Middle East respiratory syndrome-related coronavirus and Severe acute respiratory syndrome-related coronavirus 2 , a variant of SARS-CoV, emerged during the past two decades and caused the first pandemics of the 21st century.
The variant's parent lineage, BA.2.86, has a large number of mutations compared to the original version of omicron — and those changes have enabled the virus to sidestep existing immunity ...