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Betacoronavirus (β-CoVs or Beta-CoVs) is one of four genera (Alpha -, Beta-, Gamma-, and Delta-) of coronaviruses. Member viruses are enveloped, positive-strand RNA viruses that infect mammals, including humans. The natural reservoir for betacoronaviruses are bats and rodents. Rodents are the reservoir for the subgenus Embecovirus, while bats ...
The infection of new-born chicks was characterized by gasping and listlessness with high mortality rates of 40–90%. [ 16 ] Leland David Bushnell and Carl Alfred Brandly isolated the virus that caused the infection in 1933. [ 17 ] The virus was then known as infectious bronchitis virus (IBV).
Screenshot of a template on the English Wikipedia displaying a collection of articles related to the COVID-19 pandemic, as of 3 April 2021. A year after its first creation, the main COVID-19 pandemic Wikipedia article in English had become the 34th most viewed article on the website of all time, with almost 32,000 inbound links from other articles, according to The New Republic. [2]
On February 6, 57-year-old Patricia Dowd of San Jose, California became the first COVID-19 death in the United States discovered by April 2020. She died at home without any known recent foreign travel, after being unusually sick from flu in late January, then recovering, remote working, and suddenly dying on February 6.
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]
Coronaviridae is a family of enveloped, positive-strand RNA viruses which infect amphibians, birds, and mammals. Commonly referred to as coronaviruses in the English language, the family coronaviridae includes the subfamilies Letovirinae and Orthocoronavirinae; the latter also known as coronavirinae. The viral genome is 26–32 kilobases in length.
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. Another common finding in SARS patients is a ...
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 (COVID-19) 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]