4Meng X J,Robert H P,Patrick G H,et al.A novel swine virus is closely related to the human Hepatitis E virus[J].Proc Natl Acad Sci USA,1997,94:9860-9865.
5Balayan M S,Usmanov R K,Zamyatina N A,et al.Brief report:experimental hepatitis E infection in domestic pigs[J].J Med Virol,1990,32:58.
6Arankalle V A,Joshi M V,Kulkarni A M,et al.Prevalence of anti-hepatitis E virus antibodies in different Indian animal species[J].J Vial Hepat,2001,8(3):223-227.
7Favorov MO,Fields HA,Purdy MA,et al.Serologic identification of hepatitis E virus infections in epidemic and endemic settings.J Med Virol,1992,36(4):246-250.
8Takahashi M,Nishizawa T,Tanaka T,et al.Correlation between positivity for immunoglobulin A antibodies and viraemia of swine hepatitis E virus observed among farm pigs in Japan.J Gen Virol,2005,86(6):1807-1813.
9Vitral CL,Pinto MA,Lewis Ximenez LL,et al.Serological evidence of hepatitis E virus infection in different animal species from the Southeast of Brazil.Mem Inst Oswaldo Cruz,2005,100(2):117-122.
10Meng XJ,Halbur PG,Shapiro MS,et al.Genetic and experimental evidence for cross-species infection by swine hepatitis E virus.J Virol,1998,72(12):9714-9721.