Table 2. The virus with the highest homology with A/wild bird feces/Mongolia/M9-3/2024 (M9-3) before the 2024–2025 winter season and the nucleotide sequence identities of the gene segments.
| Gene | Virus | Accession number | % Identitya |
|---|---|---|---|
| PB2 | A/Spot-billed duck/South Korea/KNU2022-73/2022 (H4N6) | EPI_ISL_19109827 | 98.82 |
| PB1 | A/spot billed duck/Korea/KNU-30/2022 (H1N1) | EPI_ISL_18698826 | 98.94 |
| PA | A/duck/Bangladesh/17-D-2338/2024 (H5N1) | EPI_ISL_19183994 | 99.21 |
| HA | A/Mandarin duck/Korea/WA496/2022 (H5N1) | EPI_ISL_15647836 | 98.83 |
| NP | A/eagle/Korea/22WC464/2023 (H5N1) | EPI_ISL_18245369 | 98.66 |
| NA | A/hooded crane/Kagoshima/KU-134/2022 (H5N1) | EPI_ISL_18472686 | 99.36b |
| M | A/Mandarin duck/Korea/WA496/2022 (H5N1) | EPI_ISL_15647836 | 99.59 |
| NS | A/duck/Bangladesh/19D2067/2023 (H9N9) | EPI_ISL_18983962 | 99.16 |
PB, polymerase basic; PA, polymerase acidic; HA, hemagglutinin; NP, nucleoprotein; NA, neuraminidase; M, matrix; NS, nonstructural.
aNucleotide sequence identity between M9-3 and the virus with the highest homology.
bThe NA gene of A/Mandarin duck/Korea/WA496/2022 (H5N1) showed 99.22% sequence identity with that of M9-3.