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COVID-19 is the deadliest pandemic in US history; [359] it was the third-leading cause of death in the US in 2020, behind heart disease and cancer. [360]
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic . The symptoms of COVID‑19 can vary but often include fever, [ 7 ] fatigue, cough, breathing difficulties , loss of smell , and loss of taste .
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]
However, stylization as "Covid-19" has become common as well. Numerous news sources including The New York Times, CNN, Politico, The Wall Street Journal, NBCNews have presented the term with a capital C but all other letters as lower case. [30] As a result, use of "Covid-19" has become commonplace and even the accepted standard in some cases. [31]
Map of school closures around the world, red represents where schools were entirely closed at some point in the pandemic and orange where they were partially closed Social impact of the COVID-19 pandemic; COVID-19 pandemic baby bust; Impact of the COVID-19 pandemic on education; Human rights issues related to the COVID-19 pandemic
The effects of the COVID-19 pandemic, a global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS CoV‑2), have been broad, affecting general society, the global economy, culture, ecology, politics, and other areas. These aspects are discussed across many articles:
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.
Screenshot of a template on the English Wikipedia displaying a collection of articles related to the COVID-19 pandemic, as of 3 April 2021. A year after its first creation, the main COVID-19 pandemic Wikipedia article in English had become the 34th most viewed article on the website of all time, with almost 32,000 inbound links from other articles, according to The New Republic. [2]