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3. en.wikipedia.org › wiki › COVID-19COVID-19 - Wikipedia

   en.wikipedia.org › wiki › COVID-19

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   Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2.The first known case was identified in Wuhan, China, in December 2019. Most scientists believe the SARS-CoV-2 virus entered into human populations through natural zoonosis, similar to the SARS-CoV-1 and MERS-CoV outbreaks, and consistent with other pandemics in human history.

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4. en.wikipedia.org › wiki › CoronavirusCoronavirus - Wikipedia

   en.wikipedia.org › wiki › Coronavirus

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   Coronaviruses are a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, they cause respiratory tract infections that can range from mild to lethal.

   • Class: Pisoniviricetes
   • Kingdom: Orthornavirae

   • Family: Coronaviridae
   • Phylum: Pisuviricota

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

   www.who.int › news-room › fact-sheets

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   COVID-19 is a disease caused by a virus. The most common symptoms are fever, chills, and sore throat, but there are a range of others. Most people make a full recovery without needing hospital treatment. People with severe symptoms should seek medical care as soon as possible.

6. www.who.int › diseases › novel-coronavirus-2019Coronavirus disease (COVID-19) - World Health Organization (WHO)

   www.who.int › diseases › novel-coronavirus-2019

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   Information on COVID-19, the infectious disease caused by the most recently discovered coronavirus.

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8. www.mayoclinic.org › diseases-conditionsCoronavirus disease 2019 (COVID-19) - Symptoms and causes

   www.mayoclinic.org › diseases-conditions

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   Mar 27, 2024 · Coronavirus disease 2019 (COVID-19) is an illness caused by the virus SARS-CoV-2. Learn more about the symptoms, risks and ways to protect yourself.

9. www.who.int › health-topics › coronavirusCoronavirus disease (COVID-19) - World Health Organization (WHO)

   www.who.int › health-topics › coronavirus

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   Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus. Most people infected with the virus will experience mild to moderate respiratory illness and recover without requiring special treatment. However, some will become seriously ill and require medical attention.