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Acta Trop. 2019 Feb 6;192:87-90. doi: 10.1016/j.actatropica.2019.02.004. [Epub ahead of print]

Serological evidence of hepatitis E virus and influenza A virus infection in farmed wild boars in China.

Author information

1
State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, People's Republic of China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, People's Republic of China.
2
State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, People's Republic of China.
3
College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi Province 330045, People's Republic of China.
4
College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, People's Republic of China.
5
College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, People's Republic of China. Electronic address: huguixue901103@163.com.
6
State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, People's Republic of China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, People's Republic of China; Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu Province 225009, People's Republic of China. Electronic address: xingquanzhu1@hotmail.com.

Abstract

Hepatitis E virus (HEV) and influenza A virus (IAV) are two important pathogens which can infect humans and various animals causing public health problems. In this study, the seroprevalence and risk factors associated with HEV and IAV infection in farmed wild boars were investigated in China. A total of 758 serum samples were collected from farmed wild boars between 2015 and 2016, and antibodies against HEV and IAV were examined by enzyme-linked immunosorbent assay (ELISA) using commercially available kits. The overall prevalence of anti-HEV antibodies was 24.54% (186/758, 95% CI 21.48-27.60) in farmed wild boars. There were statistically significant differences in the HEV seroprevalence in farmed wild boars of different ages (<22 days: 8.33%; 22-66 days: 18.89%; >66 days: 26.36%) (P < 0.05) and different genders (50.00% in male and 23.49% in female) (P <  0.01). However, there was no statistically significant difference in the HEV seroprevalence in farmed wild boars of different regions and different years. The overall IAV seroprevalence was 5.80% (44/758, 95% CI 4.14-7.46), and there was no statistically significant difference in the IAV seroprevalence in farmed wild boars of different ages and genders, collected from different regions and different years. Our results indicate that HEV and IAV infections in farmed wild boars may pose a potential risk for human infection. To our knowledge, this is the first report of HEV and IAV seroprevalence in farmed wild boars in China, which provides baseline data for further studies and for control of HEV and IAV infection in farmed wild boars.

KEYWORDS:

China; Farmed wild boars; Hepatitis E virus (HEV); Influenza A virus (IAV); Seroprevalence

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