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Emergence of novel reassortant H3N2 swine influenza viruses with the 2009 pandemic H1N1 genes in the United States

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Abstract

Reassortant H1 swine influenza viruses (SIVs) carrying 2009 pandemic H1N1 virus (pH1N1) genes have been isolated from pigs worldwide. Seven novel reassortant H3N2 SIVs were identified from diseased pigs in the USA from winter 2010 to spring 2011. These novel viruses contain three or five internal genes from pH1N1 and continue to circulate in swine herds. The emergence of novel reassortant H3N2 SIVs demonstrates reassortment between pH1N1 and endemic SIVs in pigs and justifies continuous surveillance.

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Acknowledgments

This study was partially supported by a grant from the National Institute of Allergy and Infectious Diseases, National Institute of Health, Department of Health and Human Services (Contract No. HHSN266200700005C), and by CEEZAD program of the Department of Homeland Security (Cooperative Agreement No. 2010-ST-061-AG0001-02).

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Authors and Affiliations

  1. Department of Diagnostic Medicine and Pathobiology, Kansas State University, Mosier Hall, K233, Manhattan, KS, 66506, USA

    Qinfang Liu, Jingjiao Ma, Haixia Liu, Wenbao Qi, Joe Anderson, Richard A. Hesse, Jürgen A. Richt & Wenjun Ma

  2. Abilene Animal Hospital PA, Abilene, KS, 67410, USA

    Steven C. Henry

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  1. Qinfang Liu
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  2. Jingjiao Ma
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  3. Haixia Liu
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  4. Wenbao Qi
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  5. Joe Anderson
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  7. Richard A. Hesse
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  8. Jürgen A. Richt
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  9. Wenjun Ma
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Correspondence to Wenjun Ma.

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Liu, Q., Ma, J., Liu, H. et al. Emergence of novel reassortant H3N2 swine influenza viruses with the 2009 pandemic H1N1 genes in the United States. Arch Virol 157, 555–562 (2012). https://doi.org/10.1007/s00705-011-1203-9

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  • DOI: https://doi.org/10.1007/s00705-011-1203-9

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