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  1. › 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. 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.

  3. › coronavirus › 2019-ncovAbout COVID-19 | CDC

    Jul 10, 2023 · COVID-19 (coronavirus disease 2019) is a disease caused by a virus named SARS-CoV-2. It can be very contagious and spreads quickly. Over one million people have died from COVID-19 in the United States. COVID-19 most often causes respiratory symptoms that can feel much like a cold, the flu, or pneumonia.

  4. Sep 1, 2023 · What You Need to Know Viruses like SARS-CoV-2 continuously evolve as changes in the genetic code (caused by genetic mutations or viral... SARS-CoV-2 has consistently mutated over the course of the pandemic, resulting in variants that are different from the... Throughout the COVID-19 pandemic, many ...

  5. Jul 14, 2023 · Coronavirus disease 2019 (COVID-19) Symptoms. Symptoms of coronavirus disease 2019 (COVID-19) may appear 2 to 14 days after exposure. This time after... Causes. Infection with severe acute respiratory syndrome coronavirus 2, also called SARS-CoV-2, causes coronavirus... Risk factors. Close contact ...

  6. › wiki › COVID-19COVID-19 - Wikipedia

    COVID-19 Coronavirus disease 2019 ( COVID-19) is a contagious disease caused by the virus SARS-CoV-2. The first known case was identified in Wuhan, China, in December 2019. [6] The disease quickly spread worldwide, resulting in the COVID-19 pandemic .

  7. Oct 23, 2020 · SARS-CoV-2 is an enveloped β-coronavirus, with a genetic sequence very similar to SARS-CoV-1 (80%) and bat coronavirus RaTG13 (96.2%). 2 The viral envelope is coated by spike (S) glycoprotein, envelope (E), and membrane (M) proteins ( fig 1 ). Host cell binding and entry are mediated by the S protein.

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