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Note the spikes that adorn the outer surface of the virus, which impart the look of a corona surrounding the virion, when viewed electron microscopically. A novel coronavirus, named Severe Acute Respiratory Syndrome coronavirus 2 (SARS-CoV-2), was identified as the cause of an outbreak of respiratory illness first detected in Wuhan, China in 2019.
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.
Date/Time Thumbnail Dimensions User Comment; current: 05:47, 13 September 2022: 3,469 × 3,468 (1.86 MB): MinMaj7th: updated with new lineage information: 22:51, 7 May 2022
In 2003, following the outbreak of severe acute respiratory syndrome (SARS) which had begun the prior year in Asia, and secondary cases elsewhere in the world, the World Health Organization (WHO) issued a press release stating that a novel coronavirus identified by several laboratories was the causative agent for SARS. The virus was officially ...
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The most similar known viruses to SARS-CoV-2 include bat coronaviruses RpYN06 with 94.5% identity, [15] and RmYN02 with 93% identity [18] RaTG13 was not the direct progenitor of SARS-CoV-2. [19] Temmam et al. found no serological evidence for exposure to BANAL-52 among bat handlers and guano collectors in the area of Laos where it was sampled ...
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]