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Food Environ Virol. 2018 Dec;10(4):373-377. doi: 10.1007/s12560-018-9352-6. Epub 2018 Jul 26.

Molecular Detection of Indigenous Hepatitis E Virus (HEV) from Tibetan Pigs in Tibet, China.

Author information

1
College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
2
Laboratory of Detection and Monitoring of Highland Animal Disease, Tibet Agriculture and Animal Husbandry College, Linzhi, 860000, Tibet, People's Republic of China.
3
College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China. yshen@mail.hzau.edu.cn.
4
College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China. lijk210@sina.com.
5
Laboratory of Detection and Monitoring of Highland Animal Disease, Tibet Agriculture and Animal Husbandry College, Linzhi, 860000, Tibet, People's Republic of China. lijk210@sina.com.

Abstract

Hepatitis E is an important public health concern throughout the world. Many molecular and serological surveys have reported the prevalence and genotypic characteristics of HEV in humans and animals worldwide. However, the genotypic characterization of this virus is very limited in Tibetan pigs. Hence, we aimed to explore the genotype of HEV, prevailing among Tibetan pigs in China. For this purpose, 253 bile samples of Tibetan pigs (free-range animals) were collected from different slaughterhouses during 2017-2018 and subsequently tested for HEV RNA by RT-nPCR. A total of 11 out of 253 (4.35%) samples tested were positive for HEV RNA. Based on the sequence alignment and phylogenetic analysis, all the isolated HEV strains belonged to genotype 4 and clustered into subtype 4b by sharing more than 84.8-95.2% identities with other reported strains. Our results concluded that HEV genotype 4 is prevailing among Tibetan pigs in Tibet, China.

KEYWORDS:

Genotype 4; Hepatitis E virus; Phylogenetic analysis; Tibetan pigs

PMID:
30051235
DOI:
10.1007/s12560-018-9352-6
[Indexed for MEDLINE]

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