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).
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.
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.
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 ...
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 ...
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 .
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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