What we know about variants BA.4 and BA.5

We’re closely monitoring BA.4 and BA.5, the Omicron subvariants of the virus that causes #COVID19. Here’s what we know.

Layering COVID-19 protections, such as staying up to date with vaccines and boosters and wearing a mask around people who are not in your household, is the best way to increase your protection level and reduce the risk of severe COVID-19 illness.

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