Phylogenetic and Molecular Characteristics of Wild Bird‐Origin Avian Influenza Viruses Circulating in Poland in 2018−2022: Reassortment, Multiple Introductions, and Wild Bird–Poultry Epidemiological Links

Abstract excerpt

Since 2020, a significant increase in the severity of H5Nx highly pathogenic avian influenza (HPAI) epidemics in poultry and wild birds has been observed in Poland. To further investigate the genetic diversity of HPAI H5Nx viruses of clade 2.3.4.4b, HPAIV‐positive samples collected from dead wild birds in 2020–2022 were phylogenetically characterized. In addition, zoonotic potential and possible reassortment...

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