The Omicron subvariants BA.4 and BA.5 have together become dominant in the U.S., the C.D.C. estimates. June 28, 2022 Healthy tips, NYT No comments By BY ADEEL HASSAN from NYT Health https://ift.tt/hLay2if Share This: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook
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