XBB.1.5: What to Know About the 'Most Transmissible' COVID Subvariant Yet

Throughout the pandemic, the virus that causes COVID-19 has continued to mutate and change as it spreads to become more transmissible. The newest subvariant picking up steam in the U.S.—called XBB.1.5—is no exception. XBB.1.5 is yet another Omicron subvariant, similar to BA.5, BQ.1, and other strains that have dominated in recent months.
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