2020年3月26日 · Background The current COVID-19 pandemic is caused by a coronavirus named SARS-CoV-2. Coronaviruses (CoVs) are a large family of viruses, several of which cause respiratory diseases in humans, from the common cold to more rare and serious diseases such as
Coronavirus Background and History | Psych Central
2020年4月4日 · Coronaviruses are a family of viruses that can cause mild to moderate upper-respiratory tract illnesses such as the common cold, severe acute respiratory syndrome (SARS) and Middle East...
Coronavirus History: How Did Coronavirus Start? - WebMD
2023年11月21日 · What was the first COVID-19 history? The virus that causes COVID-19 was a novel coronavirus, meaning it had never infected humans. The virus was discovered in Wuhan, China, in 2019 and spread...
Coronavirus - Wikipedia
As of 10 March 2023, there were at least 6,881,955 [104] confirmed deaths and more than 676,609,955 [104] confirmed cases in the COVID-19 pandemic. The Wuhan strain has been identified as a new strain of Betacoronavirus from group 2B with approximately 70% genetic similarity to the SARS-CoV. [124]
History of coronavirus - Wikipedia
The history of coronaviruses is an account of the discovery of the diseases caused by coronaviruses and the diseases they cause. It starts with the first report of a new type of upper-respiratory tract disease among chickens in North Dakota, U.S., in 1931. The causative agent was identified as a virus in 1933.
COVID-19 pandemic - Wikipedia
The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an outbreak of COVID-19 in Wuhan, China, in December 2019. It spread to other areas of Asia, and then worldwide in early 2020.
About COVID-19 | COVID-19 | CDC - Centers for Disease Control ...
COVID-19 (coronavirus disease 2019) is a disease caused by the SARS-CoV-2 virus. It can be very contagious and can spread quickly. As of June 1, 2024, nearly 1.2 million people have died of COVID-19 in the U.S.