Genetic Diversity, Reassortment Patterns, and Antigenic Characterization of Two H9N2 Avian Influenza Viruses Isolated from Quails in China.

doi:10.3390/v18080919

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Genetic Diversity, Reassortment Patterns, and Antigenic Characterization of Two H9N2 Avian Influenza Viruses Isolated from Quails in China.

Viruses - 21 Aug 2026

Teng Yutao, Li Peidong, Zhang Fuyou, Zhou Wanting, Wang Xue, Zhu Hao, Song Qingqing, Li Zhaoyang, Liu Chunguo

Abstract excerpt

H9N2 avian influenza viruses pose a persistent zoonotic risk owing to their broad host adaptability. Between 2024 and 2025, two H9N2 isolates (ZHY1022B2 and ZHY0417A11) were recovered from quail flocks in Hebei, China. Phylogenetic analysis clustered their HA genes within the dominant B4.7.2 subclade, but diverged into two subgroups (B4.7.2.2 and B4.7.2.1). Of particular interest was ZHY0417A11, which displayed a...

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PMID: 42655736
DOI: 10.3390/v18080919
PMCID: PMC13517541

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