Variants of the Virus that Causes COVID-19

Variants of the Virus that Causes COVID-19
Updated Apr. 2, 2021
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What is a variant?

Viruses constantly change through mutation, and new variants of a virus are expected to occur over time.
Learn more

What You Need to Know

Protect yourself and others against COVID-19 by wearing a mask, staying at least 6 feet apart, avoiding crowds, washing your hands, and getting vaccinated when it’s available to you.

About Variants of the Virus
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US Cases Caused by Variants

View a map showing the number of confirmed cases in each state.

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Variant Proportions in the U.S.

View data showing proportions of Variants of Concern and Variants of Interest.

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Global Variant Reports

View a global map showing reports of variants in each country.

Genomic Surveillance

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Research and Selected Publications