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Isolation of novel triple-reassortant swine H3N2 influenza viruses possessing the hemagglutinin and neuraminidase genes of a seasonal influenza virus in Vietnam in 2010

Authors

  • Long Thanh Ngo,

    1. Center for Veterinary Diagnostics, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
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  • Yasuaki Hiromoto,

    1. Research Team for Zoonotic Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
    2. Zoonotic Diseases Collaboration Center (ZDCC), Bangkok, Thailand.
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  • Vu Phong Pham,

    1. Center for Veterinary Diagnostics, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
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  • Ha Thi Hong Le,

    1. Center for Veterinary Diagnostics, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
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  • Ha Truc Nguyen,

    1. Center for Veterinary Diagnostics, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
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  • Vu Tri Le,

    1. Center for Veterinary Diagnostics, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
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  • Nobuhiro Takemae,

    1. Research Team for Zoonotic Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
    2. Zoonotic Diseases Collaboration Center (ZDCC), Bangkok, Thailand.
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  • Takehiko Saito

    1. Research Team for Zoonotic Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
    2. Zoonotic Diseases Collaboration Center (ZDCC), Bangkok, Thailand.
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Takehiko Saito, Research Team for Zoonotic Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki 305-0856, Japan. E-mail: taksaito@affrc.go.jp

Abstract

Please cite this paper as: Ngo et al. (2012) Isolation of novel triple-reassortant swine H3N2 influenza viruses possessing the hemagglutinin and neuraminidase genes of a seasonal influenza virus in Vietnam in 2010. Influenza and Other Respiratory Viruses 6(1), 6–10.

Surveillance of swine influenza viruses (SIVs) in 31 pig farms in northern and southern parts of Vietnam was conducted. Six H3N2 influenza A viruses were isolated from a pig farm in southern Vietnam. They were novel genetic reassortants between a triple–reassortant SIV and a human seasonal H3N2 virus. Their hemagglutinin and neuraminidase genes were derived from a human virus circulating around 2004–2006 and the remaining genes from a triple-reassortant SIV that originated in North America. This is the first report describing the isolation of a novel triple-reassortant SIV in Vietnam.

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