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SARS-CoV-2, the causative agent of COVID-19, was first introduced to humans through zoonosis (transmission of a pathogen to a human from an animal), and a zoonotic spillover event is the origin of SARS-CoV-2 that is considered most plausible by the scientific community.
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]
In February 2021, after conducting part of their study, the WHO stated that the likely origin of COVID-19 was a zoonotic event from a virus circulating in bats, likely through another animal carrier, and that the time of transmission to humans was likely towards the end of 2019.
A new analysis of genetic material gathered from a live-animal market in Wuhan in the early weeks of the COVID-19 pandemic strengthens the case that the outbreak originated there when the ...
Characteristics of zoonotic coronavirus strains MERS-CoV, SARS-CoV, SARS-CoV-2, and related diseases MERS-CoV SARS-CoV SARS-CoV-2; Disease: MERS: SARS: COVID-19: Outbreaks: 2012: 2002–2004: 2019−present: Epidemiology Date of first identified case: June 2012: November 2002: December 2019 [99] Location of first identified case: Jeddah, Saudi ...
Epidemics caused by zoonotic diseases ... SARS Coronavirus 1, ... The study looked at more than 3,150 outbreaks between 1963 and 2019, identifying 75 spillover events in 24 countries. ...
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 ...
A CDC workshop held in China in May 2019 also concluded that zoonotic spread was incredibly unlikely, saying that: “Of the 30 most dangerous zoonotic pathogens poised for outbreak in China ...