U.S. Flu Season Surges: 18M+ Cases, 230K Hospitalizations
U.S. flu season reports over 18M cases, 230K hospitalizations and 9.3K deaths. A(H3N2) dominates; 32 pediatric deaths with 90% unvaccinated. CDC urges vaccination.
H3N2
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New H3N2 Subclade K Emerges as Flu Season Kicks In
Health experts warn that H3N2 subclade K has been circulating since summer 2025, with outbreaks in Canada, Japan and the UK. Is the U.S. next?