AI Article Synopsis
- * The H5N8 HPAIVs circulated throughout winter, while the H5N1 was only detected in early winter. Both G2a and G2b groups of HPAIVs were identified together, suggesting they co-existed during this time.
- * Additionally, low pathogenicity avian influenza viruses (LPAIVs) of various subtypes were also isolated, with evidence of different genotypes of H7N7 LPA
Article Abstract
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.
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| http://dx.doi.org/10.1016/j.cimid.2024.102182 | DOI Listing |
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