Identification of thermostability-enhancing mutations in H9N2 avian influenza virus hemagglutinin.

J Virol · 2026 · PMC13098216 · PMID 41837643

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a clear trendno p-value reported

Since 2013, H9N2 viruses circulating in China have shown a clear trend toward increased affinity for human-type receptors ( 50 , 51 ).

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.