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Seroepidemiology and Molecular Characterization of Hepatitis E Virus in Macaca Mulatta from a Village in Yunnan, China, where Infection with this Virus Is Endemic

Fen Huang,Wenhai Yu,Xiuguo Hua,S. Jing,Wei-kun Zeng,Zhanlong He

Published 2011 in Hepatitis Monthly

ABSTRACT

Background Hepatitis E virus (HEV) infection is a significant public health concern and has been identified as a zoonotic infection. Objectives Since no reports have characterized the epidemiological and genotypic features of HEV infections in Macaca mulatta (rhesus macaques) from Yunnan, China, where swine HEV infections are endemic, we aimed to investigate these characteristics. Materials and Methods Seroepidemiological and molecular characterization of HEV in both Macaca mulatta and pigs from the Yunnan province of China were conducted using enzyme-linked immunosorbent assay (ELISA) and reverse transcription-nested PCR (RT-nPCR). Four hundred and eighty-two stool samples (320 from Macaca mulatta and 162 from pigs) and 92 serum samples (all from Macaca mulatta) were collected for the detection of HEV RNA and anti-HEV antibodies (IgG/IgM). Results Thirty-three rhesus macaques (35.87%) were positive for HEV IgG. Of these, 3 were also positive for HEV IgM. Four different strains of swine HEV RNA were detected in pigs; however, we failed to detect any in Macaca mulatta. Conclusions Results indicate that Macaca mulatta may not be a natural reservoir of HEV.

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