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Novel coronavirus (nCoV) is a provisional name given to coronaviruses of medical significance before a permanent name is decided upon. Although coronaviruses are endemic in humans and infections normally mild, such as the common cold (caused by human coronaviruses in ~15% of cases), cross-species transmission has produced some unusually virulent strains which can cause viral pneumonia and in ...
COVID-19 is the deadliest pandemic in US history; [361] it was the third-leading cause of death in the US in 2020, behind heart disease and cancer. [362] From 2019 to 2020, US life expectancy dropped by 3 years for Hispanic Americans, 2.9 years for African Americans, and 1.2 years for white Americans. [363]
e. Severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) [2] is a strain of coronavirus that causes COVID-19, the respiratory illness responsible for the COVID-19 pandemic. [3] The virus previously had the provisional name 2019 novel coronavirus (2019-nCoV), [4][5][6][7] and has also been called human coronavirus 2019 (HCoV-19 or ...
In 2003, following the outbreak of severe acute respiratory syndrome (SARS) which had begun the prior year in Asia, and secondary cases elsewhere in the world, the World Health Organization (WHO) issued a press release stating that a novel coronavirus identified by several laboratories was the causative agent for SARS. The virus was officially ...
In January 2020, the World Health Organization (WHO) tentatively named it "2019-nCoV", short for "2019 Novel Coronavirus", or "2019 Novel Coronavirus Acute Respiratory Disease". This naming was based on the organization's 2015 guidelines for naming novel viruses and diseases, avoiding the use of geographic locations (such as Wuhan ), in part to ...
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.
Coronaviruses. Coronavirus diseases are caused by viruses in the coronavirus subfamily, a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, the group of viruses cause respiratory tract infections that can range from mild to lethal.
A medical dictionary definition of pandemic is " an epidemic occurring on a scale that crosses international boundaries, usually affecting people on a worldwide scale ". [ 14 ] A disease or condition is not a pandemic merely because it is widespread or kills many people; it must also be infectious.