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    • What to Know: FLiRT COVID-19 Variants Spreading in the U.S.

      US News & World Report· 13 hours ago

      A group of COVID-19 variants nicknamed “FLiRT” is spreading as the U.S. heads into summer. JN.1 was the top strain circulating in the U.S. for much of the winter. KP.2 was responsible for more ...