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Transition in genetic constellations of H3N8 and H4N6 low-pathogenic avian influenza viruses isolated from an overwintering site in Japan throughout different winter seasons.
Khalil, Ahmed Magdy; Nishi, Natsuko; Kojima, Isshu; Fukunaga, Wataru; Kuwahara, Masakazu; Masatani, Tatsunori; Matsui, Tsutomu; Ozawa, Makoto.
Afiliación
  • Khalil AM; Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0065, Japan.
  • Nishi N; United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan.
  • Kojima I; Department of Zoonotic Diseases, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.
  • Fukunaga W; Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0065, Japan.
  • Kuwahara M; Joint Graduate School of Veterinary Medicine, Kagoshima University, Kagoshima, Japan.
  • Masatani T; Transboundary Animal Diseases Research Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan.
  • Matsui T; Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0065, Japan.
  • Ozawa M; Matsuoka Research Institute for Science, Koganei, Tokyo, Japan.
Arch Virol ; 165(3): 643-659, 2020 Mar.
Article en En | MEDLINE | ID: mdl-31925543
The Izumi plain in Kagoshima Prefecture, Japan, is an overwintering site for migratory ducks and endangered cranes. We have surveyed avian influenza viruses (AIVs) in this area since 2012 and isolated low-pathogenic AIVs (LPAIVs) of various subtypes every winter season. H3N8 LPAIVs were isolated during the 2012/13 and 2016/17 seasons, and H4N6 LPAIVs were isolated during the 2012/13 and 2013/14 seasons. In the 2017/18 season, one H3N8 and two H4N6 LPAIV strains were isolated from environmental water samples. Genetic and phylogenetic analysis for each gene segment from these H3N8 and H4N6 LPAIVs suggested that our isolates were genetic reassortants generated by intermixing between AIVs circulating not only in Eurasia but also in Africa and/or North America. Comparison of the genetic constellations of our three isolates with their counterparts isolated during previous seasons from the Izumi plain revealed a drastic transition in the genetic constellations of both subtypes. These findings emphasize the importance of continuous surveillance of AIVs on the Izumi plain.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aves / Genoma Viral / Patos / Subtipo H3N8 del Virus de la Influenza A / Gripe Aviar Límite: Animals País/Región como asunto: Africa / America do norte / Asia / Europa Idioma: En Revista: Arch Virol Año: 2020 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Austria
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aves / Genoma Viral / Patos / Subtipo H3N8 del Virus de la Influenza A / Gripe Aviar Límite: Animals País/Región como asunto: Africa / America do norte / Asia / Europa Idioma: En Revista: Arch Virol Año: 2020 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Austria