Okuya K, Esaki M, Tokorozaki K, Hasegawa T, Ozawa. Isolation and genetic characterization of multiple genotypes of both H5 and H7 avian influenza viruses from environmental water in the Izumi plain, Kagoshima prefecture, Japan during the 2021/22 winte. Comp Immunol Microbiol Infect Dis. 2024 Apr 15;109
In the 2021/22 winter, one H5N1 and nine H5N8 high pathogenicity avian influenza viruses (HPAIVs) of clade 2.3.3.4b were isolated from the water in crane roosts on the Izumi plain, Japan. Additionally, we isolated low pathogenicity avian influenza viruses (LPAIVs) of five subtypes: H1N1, H4N2, H4N6, H7N7, and H10N4. H5N8 HPAIVs belonging to the G2a group were isolated throughout winter, whereas H5N1 HPAIV belonging to the G2b group were isolated only in early winter. These findings suggest co-circulation of both G2a and G2b HPAIVs in early winter. Although two H7N7 LPAIVs were isolated from cranes´ roost water collected on the same day, the gene constellations of the two isolates were clearly different, indicating the contemporary invasion of at least two different genotypes of H7N7 LPAIVs in the Izumi plain. This study underscores the importance of monitoring both HPAIVs and LPAIVs to understand avian influenza virus ecology in migratory waterfowl populations.
See Also:
Latest articles in those days:
- Highly Pathogenic Avian Influenza A(H5N1) Virus Infection in a Dairy Farm Worker 11 hours ago
- [preprint] Emergence and interstate spread of highly pathogenic avian influenza A(H5N1) in dairy cattle 1 days ago
- Modelling the transmission dynamics of H9N2 avian influenza viruses in a live bird market 1 days ago
- CD8+ T-cell responses towards conserved influenza B virus epitopes across anatomical sites and age 4 days ago
- Surveillance for highly pathogenic avian influenza A (H5N1) in a raptor rehabilitation center-2022 4 days ago
[Go Top] [Close Window]