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SARS‑CoV‑2 is a strain of the species Betacoronavirus pandemicum (SARSr-CoV), as is SARS-CoV-1, the virus that caused the 2002–2004 SARS outbreak. [ 2 ] [ 17 ] There are animal-borne coronavirus strains more closely related to SARS-CoV-2, the most closely known relative being the BANAL-52 bat coronavirus.
Variants of severe acute respiratory syndrome coronavirus 2 are viruses that, while similar to the original, have genetic changes that are of enough significance to lead virologists to label them separately. SARS-CoV-2 is the virus that causes coronavirus disease 2019 (COVID-19).
The closest known viral relatives of SARS-CoV-2 are RaTG13 and BANAL-52, sampled from horseshoe bat droppings in Yunnan province in China and Feuang, Laos, respectively. The evolutionary distance between SARS-CoV-2 and RaTG13 is estimated to be about 50 years (between 38 and 72 years). [18] [19]
BA.2.86 is an Omicron subvariant of SARS-CoV-2, the virus that causes COVID-19. BA.2.86 is notable for having more than thirty mutations on its spike protein relative to BA.2 . [ 187 ]
Theta variant, also known as lineage P.3, [a] is one of the variants of SARS-CoV-2, the virus that causes COVID-19. The variant was first identified in the Philippines on February 18, 2021, when two mutations of concern were detected in Central Visayas . [ 1 ]
A UK case-control study for 54,906 participants, testing positive for SARS-CoV-2 between 1 October 2020 and 29 January 2021 in the community setting (not including vulnerable persons from care centres and other public institutions), reported that patients infected with the Alpha variant (VOC 202012/1) had a hazard ratio for death within 28 days ...
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2.The disease spread worldwide, resulting in the COVID-19 pandemic.. The symptoms of COVID‑19 can vary but often include fever, [7] fatigue, cough, breathing difficulties, loss of smell, and loss of taste.
Severe acute respiratory syndrome coronavirus (SARS-CoV), β-CoV (identified in 2003) Middle East respiratory syndrome-related coronavirus (MERS-CoV), β-CoV (identified in 2012) Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), β-CoV (identified in 2019) These cause the diseases commonly called SARS, MERS, and COVID-19 respectively.
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