5Jiang X, Wang J, Graham DY, et al. Detection of Norwalk virus in stool by polymerase chain reaction [ J]. J Clin Microbiol, 1992,30: 2529.
6Kapikian AZ, Wyatt RG, Dolin R, et al. Visualization by immune electrcn microsecopy of a27nm particle associated with acute infections non - bacterial gastroenteritis[ J]. J Virol, 1972,10 : 1075 - 1081.
7Fang ZY,Wang QH,Ushijima H,et al . Human calicivirus and astmvirus infection in association with acute diarrhea in China [ C ], Abstract book for 11 thInternational Congress of Virology, Sydney, Australia, 1999. 199.
8Noel JS, Fankhauser RL, Ando T, et al. Identification of a distinct common strain of "Norwalk - like Viruses" having a global global distribution [ J ]. J Infect Dis, 1999,174 : 1134 - 1144.
9Jiang X,Wang M,Wang K,et al.Sequence and genomic organization of Norwalk virus.Virology,1993,195:51-61.
10Green KY,Ando T,Balayan MS,et al.Taxonomy of the caliciviruses.J Infect Dis,2000,181:322-330.
