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3. www.hopkinsmedicine.org › coronavirusWhat Is Coronavirus? | Johns Hopkins Medicine

   www.hopkinsmedicine.org › coronavirus

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   What You Need to Know COVID-19. COVID-19 is the disease caused by SARS-CoV-2, the coronavirus that emerged in December 2019. COVID-19 can be severe, and has caused millions of deaths around the world as well as lasting health problems in some who have survived the illness. The coronavirus can be spread from person to person.

4. www.who.int › health-topics › coronavirusCoronavirus - 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. Older people and those with underlying medical ...

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

   www.mayoclinic.org › diseases-conditions

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   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. Coronavirus Enlarge image.

6. www.cnn.com › 2020/01/20 › healthWhat is coronavirus? COVID-19 explained | CNN

   www.cnn.com › 2020/01/20 › health

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   Jan 20, 2020 · Pantropic canine coronavirus that can impact cats and dogs can be fatal to dogs, studies show. These particular dog and cat viruses don’t seem to spread to humans. CNN’s Kristie Lu Stout ...

   • Video Duration: 2 min

   • Author: Jen Christensen,Meera Senthilingam

7. 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 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. Anyone can get sick with COVID-19 and become ...

8. www.scientificamerican.com › article › a-visualA Visual Guide to the SARS-CoV-2 Coronavirus | Scientific ...

   www.scientificamerican.com › article › a-visual

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   Jul 1, 2020 · A SARS-CoV-2 particle enters a person’s nose or mouth and floats in the airway and lungs until it brushes against a cell that has an ACE2 receptor on the surface. The virus binds to that cell ...

9. scienceexchange.caltech.edu › topics › covid-19What is the coronavirus? Virus science explained - Caltech ...

   scienceexchange.caltech.edu › topics › covid-19

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   SARS-CoV-2 is a member of the coronavirus family. When viewed under an electron microscope, coronaviruses have a crown-like appearance ("corona" is the Latin word for "crown"). The spiky proteins that cover the virus's envelope allow it to bind to receptors on host cells, leading to infection. There are now seven coronaviruses known to infect ...