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 winter season.

Okuya, Kosuke; Esaki, Mana; Tokorozaki, Kaori; Hasegawa, Taichi; Ozawa, Makoto

Okuya, Kosuke; Esaki, Mana; Tokorozaki, Kaori; Hasegawa, Taichi; Ozawa, Makoto.

Afiliación

Okuya K; Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan; Joint Graduate School of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan.
Esaki M; Joint Graduate School of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan.
Tokorozaki K; Kagoshima Crane Conservation Committee, Izumi 899-0208, Japan.
Hasegawa T; Matsuoka Research Institute for Science, Koganei 184-0003, Japan.
Ozawa M; Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan; Joint Graduate School of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan; Kagoshima Crane Conservation Committee, Izumi 899-0208, Japan. Electronic address: mozawa@vet.kagoshima-u.ac.jp.

Comp Immunol Microbiol Infect Dis ; 109: 102182, 2024 Jun.

Article en En | MEDLINE | ID: mdl-38640701

ABSTRACT

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.

Asunto(s)

Aves; Genotipo; Gripe Aviar; Filogenia; Estaciones del Año; Japón; Animales; Gripe Aviar/virología; Gripe Aviar/epidemiología; Aves/virología; Subtipo H5N1 del Virus de la Influenza A/genética; Subtipo H5N1 del Virus de la Influenza A/aislamiento & purificación; Subtipo H5N1 del Virus de la Influenza A/patogenicidad; Subtipo H5N1 del Virus de la Influenza A/clasificación; Microbiología del Agua; Virus de la Influenza A/genética; Virus de la Influenza A/aislamiento & purificación; Virus de la Influenza A/clasificación; Subtipo H5N8 del Virus de la Influenza A/genética; Subtipo H5N8 del Virus de la Influenza A/patogenicidad; Subtipo H5N8 del Virus de la Influenza A/aislamiento & purificación; Subtipo H5N8 del Virus de la Influenza A/clasificación; Subtipo H7N7 del Virus de la Influenza A/genética; Subtipo H7N7 del Virus de la Influenza A/patogenicidad; Subtipo H7N7 del Virus de la Influenza A/aislamiento & purificación

Palabras clave

Environmental water; High pathogenicity avian influenza virus; Multiple genotypes; Phylogenetic analysis

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Filogenia / Estaciones del Año / Aves / Gripe Aviar / Genotipo Límite: Animals País/Región como asunto: Asia Idioma: En Revista: Comp Immunol Microbiol Infect Dis Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido

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