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- Variants of SARS-CoV-2 - Wikipedia
Positive, negative, and neutral mutations during the evolution of coronaviruses like SARS-CoV-2 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) Some
- Variants and Genomic Surveillance | COVID-19 | CDC
Some variants will emerge and disappear, while others will emerge and continue to spread and may replace previous variants It is important to track the emergence of variants so that those of interest can be further characterized in the lab to determine if they evade immunity and how they spread
- Where COVID is spreading now and what symptoms to look for
What new COVID variants are spreading Context: The XFG variant — also known as the Stratus variant — is leading all others with 85% share of cases, according to CDC data running through the end of September
- COVID-19 variants | WHO COVID-19 dashboard - datadot
When these changes become significantly different to a previously detected virus, these new virus types are known as “variants ” To identify variants, scientists map the genetic material of viruses (known as sequencing) and then look for differences between them to see if they have changed
- SARS-CoV-2 variants: biology, pathogenicity, immunity and control
This Review explores the evolution of SARS-CoV-2 since its emergence in late 2019 and discusses how the changes in the various variants and subvariants have affected the viral life cycle and
- What COVID-19 variants are going around in October 2025?
Get the latest COVID-19 news from infectious diseases expert Mark Rupp, MD, including COVID-19 case rates, types of variants circulating and vaccine updates
- CoVariants
Here, you can find out what mutations define a variant, what impact they might have (with links to papers and resources), where variants are found, and see the variants in Nextstrain builds!
- How COVID-19 variants outsmart the immune system
The findings, published in Cell Systems, explain why variants like omicron can evade immune defenses and suggest new strategies for building longer-lasting antibody therapies and vaccines
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