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?
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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?