Hepatitis E Virus in Macaca Mulatta Huang F et al. 749 17. Li X, Zhao C, Harrison TJ, Song A, Fan J, Zhang J, et al. Investigation of hepatitis E virus infection in swine from Hunan province, China. J Med Virol. 2008;80(8):1391-6. 18. Liu J, Zhang W, Shen Q, Yang S, Huang F, Li P, et al. Prevalence of an- tibody to hepatitis E virus among pet dogs in the Jiang-Zhe area of China. Scand J Infect Dis. 2009;41(4):291-5. 19. Zhang W, Yang S, Ren L, Shen Q, Cui L, Fan K, et al. Hepatitis E virus infec- tion in central China reveals no evidence of cross-species transmission between human and swine in this area. PLoS One. 2009;4(12):e8156. 20. Chang Y, Wang L, Geng J, Zhu Y, Fu H, Ren F, et al. Zoonotic risk of hepa- titis E virus (HEV): A study of HEV infection in animals and humans in suburbs of Beijing. Hepatol Res. 2009;39(12):1153-8. Hepat Mon. 2011;11(9):745-749