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  1. en.wikipedia.org › wiki › SARS-CoV-2SARS-CoV-2 - Wikipedia

    Severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) is a strain of coronavirus that causes COVID-19, the respiratory illness responsible for the COVID-19 pandemic. The virus previously had the provisional name 2019 novel coronavirus (2019-nCoV), and has also been called human coronavirus 2019 (HCoV-19 or hCoV-19).

  2. www.cdc.gov › coronavirus › 2019-ncovSARS-CoV-2 Variant Classifications and Definitions

    Sep 1, 2023 · Variants of SARS-CoV-2, the virus that causes COVID-19, have been reported in many countries around the world. Learn more about the current variants of concern. CDC provides credible COVID-19 health information to the U.S.

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  4. www.mayoclinic.org › diseases-conditions › coronaCoronavirus disease 2019 (COVID-19) - Symptoms and causes

    Mar 27, 2024 · COVID-19, also called coronavirus disease 2019, is an illness caused by a virus. The virus is called severe acute respiratory syndrome coronavirus 2, or more commonly, SARS-CoV-2. It started spreading at the end of 2019 and became a pandemic disease in 2020.

  5. www.nature.com › articles › s41579/020/00459-7Characteristics of SARS-CoV-2 and COVID-19 - Nature

    Oct 6, 2020 · Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a highly transmissible and pathogenic coronavirus that emerged in late 2019 and has caused a pandemic of acute...

  6. www.who.int › news-room › questions-and-answersCoronavirus disease (COVID-19): Variants of SARS-COV-2

    Nov 20, 2023 · 1. What are variants of SARS-COV-2, the virus that causes COVID-19? 2. What is the difference between variants under monitoring, variants of interest, and variants of concern? 3. What can I do to protect myself from SARS-CoV-2 variants? 4. How can we stop new variants from emerging? 5. Do COVID-19 vaccines protect against newer virus variant?

  7. www.who.int › emergencies › diseasesCoronavirus disease (COVID-19) - World Health Organization (WHO)

    Research and studies. WHO health emergency dashboard →. Weekly COVID-19 Operations Updates →. Detailed WHO surveillance data →. International Clinical Trials Registry Platform →. Origins of the SARS-CoV-2 virus →. Information on COVID-19, the infectious disease caused by the most recently discovered coronavirus.

  8. www.who.int › news-room › fact-sheetsCoronavirus disease (COVID-19) - World Health Organization (WHO)

    Aug 9, 2023 · Overview. COVID-19 is the disease caused by the SARS-CoV-2 coronavirus. It usually spreads between people in close contact. COVID-19 vaccines provide strong protection against severe illness and death. Although a person can still get COVID-19 after vaccination, they are more likely to have mild or no symptoms.

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