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  4. Variants of the Virus | CDC

    www.cdc.gov/coronavirus/2019-ncov/variants

    Variants of the Virus | CDC Variants of the Virus Updated Aug. 11, 2021 Print Omicron and Other Variants Learn more about Omicron and other COVID-19 variants. About Omicron About Variants Delta Variant Understanding Variants Variant Proportions in the U.S. Variant Surveillance Variant Classifications and Definitions View Transcript

  5. COVID-19 Variants News

  6. What You Need to Know About Variants | CDC

    www.cdc.gov/coronavirus/2019-ncov/variants/...

    The Omicron variant causes more infections and spreads faster than the original SARS-CoV-2 strain of the virus that causes COVID-19. CDC is working with state and local public health officials to monitor the spread of all variants, including Omicron. Getting a vaccine reduces your risk of severe illness, hospitalization, and death from COVID-19.

  7. COVID Variants: What You Should Know | Johns Hopkins Medicine

    www.hopkinsmedicine.org/health/conditions-and...

    Cases of the highly contagious variant, including a subvariant called BA.2, or “stealth omicron,” have caused surges of COVID-19, particularly in areas where safety precautions have been relaxed. “The omicron variant is responsible for the largest surge since 2019,” says Maragakis. “Omicron has a large number of mutations that all appeared at once.

  8. COVID-19 variants - WHO

    www.who.int/.../information/covid-19-variants

    COVID-19: variants Viruses, like SARS-CoV-2, change over time and will continue to change the more they circulate. Sometimes, variants of the virus may develop. A variant is where the virus contains at least one new change to the original virus. Some variants of the coronavirus, such as Delta and Omicron, are spreading more easily between people.

  9. Omicron, Delta, Alpha, and More: What To Know About the ...

    www.yalemedicine.org/news/covid-19-variants-of...

    The World Health Organization (WHO) names new coronavirus variants using the letters of the Greek alphabet, starting with the Alpha variant, which emerged in 2020. Below is a list of—and information about—some of the variants that have been top-of-mind. Omicron and BA.2 There’s still a lot to learn about Omicron (BA.1) and its subvariants.

  10. COVID-19 variants: What's the concern? - Mayo Clinic

    www.mayoclinic.org/.../covid-variant/faq-20505779

    Currently, the Centers for Disease Control and Prevention (CDC) has identified two variants of the virus (SARS-CoV-2) that causes coronavirus disease 2019 (COVID-19) as variants of concern. Delta (B.1.617.2). This variant is nearly twice as contagious as earlier variants and might cause more severe illness.

  11. COVID-19 Variant Data | Department of Health

    coronavirus.health.ny.gov/covid-19-variant-data

    When a virus has one or more new mutations, it’s called a variant of the original virus. Since SARS-CoV-2, the virus that causes COVID-19, was discovered, there have been hundreds of variants identified and described. The original virus that was discovered in Wuhan has not been seen in the United States since the middle of 2020.

  12. Variants of SARS-CoV-2 - Wikipedia

    en.wikipedia.org/wiki/Variants_of_SARS-CoV-2

    There are many variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease 2019 (COVID-19). Some are believed, or have been stated, to be of particular importance due to their potential for increased transmissibility, [1] increased virulence, or reduced effectiveness of vaccines against them.

  13. New coronavirus subvariants escape antibodies from ...

    www.cnn.com/2022/06/22/health/ba4-ba5-escape...

    BA.4 and BA.5 are the fastest spreading variants reported to date, and they are expected to dominate Covid-19 transmission in the United States, United Kingdom and the rest of Europe within the...

    • How do Covid-19 variants happen? | Wellcome
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    • COVID-19 virus variants and transmission
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    • New COVID-19 Variant Emerges Out of South Africa
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    • CDC Calls Covid-19 Delta Variant A ‘Concern’
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