Omicron Sub-Variants BA.4, BA.5 Make up More Than 50% of U.S. COVID Cases – CDC | Top News

by sima88

(Reuters) – The fast-spreading BA.4 and BA.5 sub-variants of Omicron are estimated to make up a combined 52% of the coronavirus cases in the United States as of June 25, the U.S. Centers for Disease Control and Prevention (CDC) said on Tuesday.

Several vaccine makers including Pfizer Inc, Moderna Inc and Novavax Inc are testing versions of their COVID vaccines updated to combat the Omicron variant.

Pfizer and Moderna have said their new vaccines also appear to work against the subvariants, even though that protection is not as strong as against BA.1.

BA.4 made up 15.7% of the variants in the United States for the week of June 25, while BA.5 made up 36.6% of the variants, according to CDC estimates.

The seven-day moving average of U.S. COVID-19 cases stood at 101,378 as of June 25, up 2.9% from a week earlier.

Copyright 2022 Thomson Reuters.

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