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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 ...
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]
While COVID-19 refers to the disease and SARS-CoV-2 refers to the virus which causes it, referring to the "COVID-19 virus" has been accepted. [9] [25] [29] Reference to SARS-CoV-2 as "the coronavirus" has become somewhat accepted despite such use implying that there is only one coronavirus species. Similarly, use of "COVID" for the disease (if ...
The COVID-19 pandemic was the third leading cause of death globally in 2020 and the second in 2021, according to a recent World Health Organization report.The almost 13 million lives lost during ...
On 11 February 2020, the International Committee on Taxonomy of Viruses announced that according to existing rules that compute hierarchical relationships among coronaviruses based on five conserved sequences of nucleic acids, the differences between what was then called 2019-nCoV and the virus from the 2003 SARS outbreak were insufficient to ...
The FBI concluded with "moderate confidence" that COVID-19 may have been created in a laboratory, based in part on genomic analysis conducted by scientists at the National Center for Medical Intelligence. [98] On 20 March 2023, the COVID-19 Origin Act of 2023 was signed into law. On June 23, 2023, the Biden administration released its report ...
During the initial outbreak in Wuhan, the virus and disease were commonly referred to as "coronavirus" and "Wuhan coronavirus", [28] [29] [30] with the disease sometimes called "Wuhan pneumonia". [ 31 ] [ 32 ] In the past, many diseases have been named after geographical locations, such as the Spanish flu , [ 33 ] Middle East respiratory ...
With lockdowns, mask mandates, vaccine debates and over 6.9 million deaths worldwide, COVID-19 has held the world’s attention since January 2020, when it was declared a public health emergency ...