ArticleFrontiers in microbiology2024
Diversity of genotypes and pathogenicity of H9N2 avian influenza virus derived from wild bird and domestic poultry.
Article in Frontiers in microbiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Advances and prospects of mucosal vaccination in the prevention and control of avian influenza.Frontiers in immunology · 2026Review
- Phylogenetic Analyses and Biological Characterization of H9N2 Avian Influenza Virus Isolated from Chickens in China from 2022 to 2023.Microorganisms · 2025Article
- Genetic Evolution of H9N2 Avian Influenza Virus in Guangxi, China.Microorganisms · 2025Article
- Phylogenetic and ecological drivers of the avian lung mycobiome and its potentially pathogenic component.Communications biology · 2025Article
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Abstract
Introduction: The H9N2 subtype is a predominant avian influenza virus (AIV) circulating in Chinese poultry, forming various genotypes (A-W) based on gene segment origins. This study aims to investigate the genotypic distribution and pathogenic characteristics of H9N2 isolates from wild birds and domestic poultry in Yunnan Province, China. Methods: Eleven H9N2 strains were isolated from fecal samples of overwintering wild birds and proximate domestic poultry in Yunnan, including four from common cranes ( Results: Phylogenetic analysis revealed that five isolates from domestic birds and one from a bar-headed goose belong to genotype S, while the remaining five isolates from wild birds belong to genotype A. These bird-derived strains possess deletions in the stalk domain of NA protein and the N Discussion: These findings suggest that at least two genotypes of H9N2 are currently circulating in Yunnan, and Yunnan mallard ducks potentially act as intermediaries in interspecies transmission. These insights highlight the importance of analyzing the current epidemiological transmission characteristics of H9N2 among wild and domestic birds in China.
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