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Feb 6, 2023 · What You Need to Know. New variants of SARS-CoV-2, the virus that causes COVID-19, will continue to occur. CDC coordinates collaborative partnerships which continue to fuel the largest viral genomic sequencing effort to date. The Omicron variant, which emerged in November 2021, has many lineages.
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COVID-19 is caused by infection with a coronavirus named...
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Everyone 6 months and older should get an updated COVID-19...
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Key Definitions. Mutation: A mutation refers to a single...
- Cdc's Role in Tracking Variants
Since early in the COVID-19 pandemic, CDC has led a national...
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Many viruses are constantly changing, including the virus...
- How Coronavirus Spreads
Coronavirus Disease 2019 (COVID-19) is most often spread...
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Sep 1, 2023 · Yale Medicine provides some background on key variants that have surfaced during the course of the pandemic. New variants are an expected part of the evolution of viruses, and that includes SARS CoV-2, the virus that causes COVID-19.
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- kathy.katella-cofrancesco@yale.edu
Mar 16, 2023 · 3 December 2020 | COVID-19 - Denmark 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.
Dec 18, 2023 · COVID-19 variants: It is usual for viruses to change and evolve as they spread between people over time. When these changes become significantly different to a previously detected virus, these new virus types are known as “variants.”
Variants of severe acute respiratory syndrome coronavirus 2 ( SARS-CoV-2) are viruses that, while similar to the original, have genetic changes that are of enough significance to lead virologists to label them separately. SARS-CoV-2 is the virus that causes coronavirus disease 2019 (COVID-19).
Dec 27, 2023 · Dec. 27, 2023. Leer en español. For the past year, Covid-19 variants have circulated in a sort of alphabet soup. Right now, two variants, JN.1 and HV.1, comprise more than half of Covid cases...