ArticleResearch square2026
Standing HA phenotypic breadth shapes H5N1 cross-host potential.
Article in Research square, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
12 authors.
Funding
Abstract
Linking genetic variation to functional phenotype remains a major barrier to assessing the cross-host potential of emerging viruses. Here, we reconstruct the evolution of predicted hemagglutinin (HA) phenotypic traits across ~13,000 highly pathogenic avian influenza A H5N1 clade 2.3.4.4b viruses circulating in North America. The wide geographic spread of avian influenza within North America triggered a wave of broad HA phenotypic diversity that was later refined by the selective sweeps in avian hosts. Following establishment in dairy cattle, however, viral populations exhibited renewed phenotypic diversification in HA, including increased permissiveness for
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