The Omicron subvariants BA.4 and BA.5 have together become dominant in the U.S., the C.D.C. estimates.

Health
By BY ADEEL HASSAN from NYT Health https://ift.tt/3pMzEWO
via IFTTT Coronavirus (2019-nCoV), Coronavirus Omicron Variant, Vaccination and Immunization The milestone comes less than six months since they were first detected in South Africa, and as the federal government considers an Omicron-specific booster dose for adults in the fall.

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