8Ryan U M,Bath C,Robertson I.Sheep may not be an important zoonotic reservoir for Cryptosporidium and Giardia parasites[J].Appl Environ Microbiol,2005,71 (9):4992-4997.
9Robinson C,Elwin K,Chalmers R M.Unusual Cryptosporidium Genotypes in Human Cases of Diarrhea[J].Emerg Infect Dis,2008,14:1800-1802.
10Chilvers B L,Cowan P E,Waddington D C,et al.The prevalence of infection of Giardia spp.and Cryptosporidium spp.in wild animals on farmland,southeastern North Island,New Zealand[J].Int J Environ Health Res,1998,8(1):59-64.