• 1
    Olsen CW, Brown IH, Easterday BC, Van Reeth K. Swine influenza; in Straw BE, Zimmerman JJ, D’Allaire S, Taylor DJ (eds): Diseases of Swine. 9th edn. Ames: Blackwell Publishing, 2006; 469482.
  • 2
    Brown IH. The epidemiology and evolution of influenza viruses in pigs. Vet Microbiol 2000; 74:2946.
  • 3
    Shope RE. Swine influenza. III. Filtration experiments and etiology. J Exp Med 1931; 54:373385.
  • 4
    Vincent AL, Ma W, Lager KM, Janke BH, Richt JA. Swine influenza viruses: a North American perspective; in Maramorosch K, Shatkin AJ, Murphy FA (ed): Advances in Virus Research. Burlington: Academic Press, 2008; 127154.
  • 5
    Van Reeth K, Brown IH, Durrwald R et al. Seroprevalence of H1N1, H3N2 and H1N2 influenza viruses in pigs in seven European countries in 2002–2003. Influenza Other Respi Viruses 2008; 2:99105.
  • 6
    Mancini DAP, Cunha EMS, Mendonça RMZ et al. Evidence of swine respiratory infection by influenza viruses in Brazil. Virus Rev Res 2006; 11:3943.
  • 7
    Caron LF, Joineau MEG, Santin E et al. Seroprevalence of H3N2 influenza A virus in pigs from Parana (South Brazil): interference of the animal management and climatic conditions. Virus Rev Res 2010; 15:111.
  • 8
    World Health Organization: WHO Manual on Animal Influenza Diagnosis and Surveillance. 2nd edn. Geneva: World Health Organization. 2002. (document WHO/CDS/CSR/NCS/2002.5)
  • 9
    Boliar S, Stanislawek W, Chambers TM. Inability of kaolin treatment to remove nonspecific inhibitors from equine serum for the hemagglutination inhibition test against equine H7N7 influenza virus. J Vet Diagn Invest 2006; 18:264267.
  • 10
    Choi YK, Goyal SM, Joo HS. Prevalence of swine influenza virus subtypes on swine farms in the United States. Arch Virol 2002; 147:12091220.
  • 11
    Maldonado J, Van Reeth K, Riera P et al. Evidence of the concurrent circulation of H1N2, H1N1 and H3N2 influenza A viruses in densely populated pig areas in Spain. Vet J 2006; 172:377381.
  • 12
    Jung T, Choi C, Chung H et al. Herd-level seroprevalence of swine-influenza virus in Korea. Prev Vet Med 2002; 53:311314.
  • 13
    Poljak Z, Dewey CE, Martin SW et al. Prevalence of and risk factors for influenza in southern Ontario swine herds in 2001 and 2003. Can J Vet Res 2008; 72:717.