Black and white world map, with lines connecting red areas that indicate COVID-19 hotspots, along with overlaid drawings of SARS-CoV-2.
WHO Updates the Nomenclature of SARS-CoV-2 Variants
Rather than being described by the location of where they emerged or an alphanumeric code, variants will be given a Greek letter.
WHO Updates the Nomenclature of SARS-CoV-2 Variants
WHO Updates the Nomenclature of SARS-CoV-2 Variants

Rather than being described by the location of where they emerged or an alphanumeric code, variants will be given a Greek letter.

Rather than being described by the location of where they emerged or an alphanumeric code, variants will be given a Greek letter.

B.1.351

Woman holding a CDC COVID-19 vaccination card with both hands.
COVID-19 mRNA Vaccines Appear Effective Against Multiple Variants
Lisa Winter | May 6, 2021
Data from three studies indicate that fully vaccinated patients are able to stave off severe disease from the B.1.1.7, B.1.351, and P.1 variants.
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Regeneron Cocktail Stumbles Against SARS-CoV-2 Variant in Vitro
Marcus A. Banks | Mar 1, 2021
A treatment of two monoclonal antibodies against SARS-CoV-2 is ninefold less effective in the lab against the B.1.351 variant than against the dominant version of the virus.
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Another Potentially Immunity-Evading SARS-CoV-2 Variant Detected
Asher Jones | Feb 16, 2021
B.1.525 shares a mutation with the B.1.351 variant first detected in South Africa that seems to allow the virus to dodge the immune system.
SARS-CoV-2 with Genomic Deletions Escapes an Antibody
Abby Olena | Feb 16, 2021
Researchers identify deletions in the N-terminal domain of the spike protein that allow the coronavirus to avoid antibody neutralization and that may contribute to the emergence of new variants.
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Side-by-Side Comparisons of Important SARS-CoV-2 Variants
Katarina Zimmer | Jan 26, 2021
Here’s our brief guide to the most noteworthy mutations in the novel coronavirus.
Special report
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A Guide to Emerging SARS-CoV-2 Variants
Katarina Zimmer | Jan 26, 2021
Scientists across the world are closely tracking the spread of mutations in the coronavirus and investigating whether they could render current vaccines less effective.
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Moderna Developing Booster Shot for New Virus Variant B.1.351
Asher Jones | Jan 25, 2021
New data suggest that the company’s approved COVID-19 vaccine protects against different virus variants, but could be less effective against the one that originated in South Africa.