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  1. www.ncbi.nlm.nih.gov › pmc › articlesSARS-COV-2, infection, transmission, transcription, translation...

    Dec 12, 2021 · Severe acute respiratory syndrome coronavirus 2 ( SARS-CoV-2 ), also known as “the novel coronavirus” due to genome variation relative to previously identified coronaviruses, is a positive sense RNA virus and the etiological agent of COVID-19.

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  3. www.mayoclinic.org › diseases-conditions › coronavirusCoronavirus 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.

  4. www.who.int › item › coronavirus-disease-(covid-19)-variants-of-sars-cov-2Coronavirus 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?

  5. www.nature.com › articles › s41431/022/01108-8A comprehensive SARS-CoV-2 and COVID-19 review, Part 1 ... -...

    May 16, 2022 · The disease is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Development of vaccines against SARS-CoV-2 provide a major step forward in reducing...

  6. www.cdc.gov › coronavirus › 2019-ncovAbout COVID-19 | CDC

    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.

  7. www.who.int › activities › tracking-SARS-CoV-2-variantsTracking SARS-CoV-2 variants - World Health Organization (WHO)

    Mar 27, 2024 · Currently circulating variants of concern (VOCs) as of 15 March 2023. Note: To better reflect the current variant landscape, which is dominated by Omicron descendent lineages, WHO updated its tracking system and working definitions of VOCs and VOIs on 15 March 2023. 4 October 2023.

  8. www.cdc.gov › coronavirus › 2019-ncovCoronavirus Disease 2019 (COVID-19) | CDC

    Mar 15, 2024 · COVID-19 vaccines are safe, effective, and free. Everyone 6 months and older can get an updated COVID-19 vaccine. Learn more. Highlights. How to Protect Yourself and Others. People with Certain Medical Conditions. Ventilation in Buildings. Symptoms of COVID-19.

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