Genetic diversity of highly pathogenic H5N8 avian influenza viruses at a single overwintering site of migratory birds in Japan, 2014/15

Author:

Ozawa M1234,Matsuu A423,Tokorozaki K5,Horie M34,Masatani T43,Nakagawa H1,Okuya K1,Kawabata T4,Toda S5

Affiliation:

1. Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Kagoshima, Japan

2. These authors contributed equally to this work

3. United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi, Japan

4. Transboundary Animal Diseases Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Kagoshima, Japan

5. Kagoshima Crane Conservation Committee, Izumi, Kagoshima, Japan

Abstract

We isolated eight highly pathogenic H5N8 avian influenza viruses (H5N8 HPAIVs) in the 2014/15 winter season at an overwintering site of migratory birds in Japan. Genetic analyses revealed that these isolates were divided into three groups, indicating the co-circulation of three genetic groups of H5N8 HPAIV among these migratory birds. These results also imply the possibility of global redistribution of the H5N8 HPAIVs via the migration of these birds next winter.

Publisher

European Centre for Disease Control and Prevention (ECDC)

Subject

Virology,Public Health, Environmental and Occupational Health,Epidemiology

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