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Scanning electron micrograph of SARS virions. Severe acute respiratory syndrome (SARS) is the disease caused by SARS-CoV-1. It causes an often severe illness and is marked initially by systemic symptoms of muscle pain, headache, and fever, followed in 2–14 days by the onset of respiratory symptoms, [13] mainly cough, dyspnea, and pneumonia.
SARS-CoV-2 is the seventh known coronavirus to infect people, after 229E, NL63, OC43, HKU1, MERS-CoV, and the original SARS-CoV. [105] Like the SARS-related coronavirus implicated in the 2003 SARS outbreak, SARS‑CoV‑2 is a member of the subgenus Sarbecovirus (beta-CoV lineage B). [106] [107] Coronaviruses undergo frequent recombination. [108]
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 ...
Longer-term effects of COVID-19 have become a prevalent aspect of the disease itself. These symptoms can be referred to by many names including post-COVID-19 syndrome, long COVID, and long haulers syndrome. An overall definition of post-COVID conditions (PCC) can be described as a range of symptoms that can last for weeks or months. [83]
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]
In December 2019, a pneumonia outbreak was reported in Wuhan, China. [119] On 31 December 2019, the outbreak was traced to a novel strain of coronavirus, [120] which was given the interim name 2019-nCoV by the World Health Organization, [121] [122] [123] later renamed SARS-CoV-2 by the International Committee on Taxonomy of Viruses.
An unresolved clinical case sparks off the first scientific involvement: a bronchoalveolar lavage fluid (BAL) sample was sent from Wuhan Central Hospital to Vision Medicals (广州微远基因科技) in Guangzhou, a private company specializing in metagenomic massive parallel sequencing analysis. [11]
Template:COVID-19 data: Main table Template:COVID-19 pandemic data: Other "hub" template Template:COVID-19 pandemic death rates: Deaths/million Template:COVID-19 pandemic death rates by country: Larger, has row numbers Template:COVID-19 vaccination data % vaccinated Template:COVID-19 vaccination data in Africa: Template:COVID-19 vaccination ...