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Severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) is a strain of coronavirus that causes COVID-19, the respiratory illness responsible for the COVID-19 pandemic. The virus previously had the provisional name 2019 novel coronavirus (2019-nCoV),
- membrane proteins (M)
- spike glycoprotein (S)
Overview The origin of SARS-CoV-2 has not been identified. [5] However, the emergence of SARS-CoV-2 may have resulted from recombination events between a bat SARS-like coronavirus and a pangolin coronavirus through cross-species transmission.[6] [7] The earliest available SARS-CoV-2 viral genomes were collected from patients in December 2019, and Chinese researchers compared these early ...
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2.The first known case was identified in Wuhan, China, in December 2019. [7] The disease quickly spread worldwide, resulting in the COVID-19 pandemic.The symptoms of COVID‑19 are variable but often include fever, [8] fatigue, cough, breathing difficulties, loss of smell, and loss of taste.
- 6,960,770 (reported), 17.6–31.4 million (estimated)
- SARS-CoV-2
- 2–14 days (typically 5), after infection
- Symptomatic and supportive
The COVID-19 pandemic, also known as the coronavirus pandemic, is a global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The novel virus was first identified in an outbreak in Wuhan , the capital of Hubei , China, in December 2019, before it spread to other areas of Asia ...
- 6,956,160 (reported), 17.5–31.4 million (estimated)
- Worldwide
- Coronavirus disease 2019 (COVID-19)
- Severe acute respiratory syndromecoronavirus 2 (SARS‑CoV‑2)
Scientifically accurate atomic model of the external structure of SARS-CoV-2. Each "ball" is an atom. Omicron (B.1.1.529) is a variant of SARS-CoV-2 first reported to the World Health Organization (WHO) by the Network for Genomics Surveillance in South Africa on 24 November 2021.
- 24 November 2021; 21 months ago
- Omicron
- B.1.1.529
- South Africa
Classification. SARS-related coronavirus is a member of the genus Betacoronavirus (group 2) and monotypic of the subgenus Sarbecovirus (subgroup B). [12] . Sarbecoviruses, unlike embecoviruses or alphacoronaviruses, have only one papain-like proteinase ( PLpro) instead of two in the open reading frame ORF1ab. [13] .
Overview. Symptom profile of variants. Delta. Omicron. Systemic. Fever. Pain. Respiratory. Cardiovascular. Neurological. Loss of smell. Loss of taste and chemesthesis. Other neurological and psychiatric symptoms. Blood clots and bleeding. Other. Stages of COVID-19 infection. Longer-term effects. Multisystem inflammatory syndrome in children.
