HomeU.S. CDC backs use of redesigned Omicron COVID boostersIllustration shows test tube labelled “COVID-19 Omicron variant test positive

Illustration shows test tube labelled “COVID-19 Omicron variant test positive

Test tube labelled "COVID-19 Omicron variant test positive" is seen in this illustration picture taken January 15, 2022. REUTERS/Dado Ruvic/Illustration/Files
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