Article

Seasonal vaccine-induced immunity shows preserved cross-reactivity to H3N2 subclade K in adults

2026-02-18

Abstract excerpt

<h4> A bstract </h4> Influenza A subclade K viruses caused high infection rates in the 2025/2026 Northern Hemisphere season, raising concerns about antigenic drift and reduced vaccine effectiveness. We measured antibody responses in matched human pre- and post-vaccination sera against a vaccine-like as well as subclade K isolates. Pre-existing immunity to subclade K variants was noted with seasonal influenza va...

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Literature Corpus work: 0a5f9938-dd71-50fa-98eb-b41d78f08331
DOI: 10.64898/2026.02.18.26346502

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