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Severe acute respiratory syndrome (SARS) is a viral respiratory disease of zoonotic origin caused by the virus SARS-CoV-1, the first identified strain of the SARS-related coronavirus. [3] The first known cases occurred in November 2002, and the syndrome caused the 2002–2004 SARS outbreak .
"Not a single case of the severe acute respiratory syndrome has been reported this year [2005] or in late 2004. It is the first winter without a case since the initial outbreak in late 2002. In addition, the epidemic strain of SARS that caused at least 774 deaths worldwide by June 2003 has not been seen outside of a laboratory since then." [85]
But nothing was known of the real nature of bats as reservoirs of coronaviruses until the epidemic of severe acute respiratory syndrome of humans in 2002/2003. Since the identification of SARS-CoV was identified in early 2003, [ 157 ] and horseshoe bats as their natural hosts in 2005, [ 97 ] [ 98 ] bats have been extensively studied.
The evolutionary distance between SARS-CoV-2 and RaTG13 is estimated to be about 50 years (between 38 and 72 years). [18] [19] Bats are a significant reservoir species for a diverse range of coronaviruses, and humans have been found with antibodies for them suggesting that direct infection by bats is common.
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.
On 11 February 2020, the International Committee on Taxonomy of Viruses adopted the official name "severe acute respiratory syndrome coronavirus 2" (SARS‑CoV‑2). [33] To avoid confusion with the disease SARS , the WHO sometimes refers to SARS‑CoV‑2 as "the COVID-19 virus" in public health communications [ 34 ] [ 35 ] and the name HCoV ...
Severe acute respiratory syndrome: SARS Taiwan A 44-year-old senior scientist at the National Defense University in Taipei was confirmed to have the SARS virus. He had been working on a SARS study in Taiwan's only BSL-4 lab. The Taiwan CDC later stated the infection occurred due to laboratory misconduct. [33] [34] 2004-04 Severe acute ...
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, working from home, and suddenly dying on February 6.