1
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Takahashi M, Nishizawa T, Nishizono A, Kawakami M, Sato Y, Kawakami K, Irokawa M, Tamaru T, Miyazaki S, Shimada M, Ozaki H, Primadharsini PP, Nagashima S, Murata K, Okamoto H. Recent decline in hepatitis E virus prevalence among wild boars in Japan: Probably due to countermeasures implemented in response to outbreaks of classical swine fever virus infection. Virus Res 2024; 348:199438. [PMID: 39013518 PMCID: PMC11315222 DOI: 10.1016/j.virusres.2024.199438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/08/2024] [Accepted: 07/13/2024] [Indexed: 07/18/2024]
Abstract
Previous studies have emphasized the necessity of surveillance and control measures for hepatitis E virus (HEV) infection in wild boars, an important reservoir of HEV. To assess the current situation of HEV infection in wild boars in Japan, this study investigated the prevalence and genetic diversity of HEV among wild boars captured in 16 prefectures of Japan during 2018-2023. Serum samples from 968 wild boars were examined for anti-HEV IgG antibodies and HEV RNA. The prevalence of anti-HEV IgG varied geographically from 0 % to 35.0 %. HEV RNA was detected in 3.6 % of boars, with prevalence varying by prefecture from 0 % to 22.2 %. Genotype 3 was the most prevalent genotype (91.9 %), followed by genotype 4 (5.4 %), with one strain closely related to genotype 6. The prevalence of HEV infection among wild boars decreased from 2018/2019 to 2022/2023 with significant declines in levels of anti-HEV IgG antibodies (14.5 % vs. 6.2 %, P < 0.0001) and HEV RNA (7.6 % vs. 1.5 %, P < 0.0001). Regional analysis showed varying trends, with no HEV RNA-positive boars found in several regions in recent years. A plausible factor contributing to the decline in HEV infection is the application of countermeasures, including installing fences to prevent intrusion into pig farms, implemented in response to the emergence of classical swine fever virus (CSFV) infection in wild boars and domestic pigs, with incidents reported annually since 2018. Further investigation is warranted to explore the association between countermeasures to CSFV infection and the decrease in HEV infection among wild boars.
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Affiliation(s)
- Masaharu Takahashi
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Shimotsuke, Tochigi 329-0498, Japan
| | - Tsutomu Nishizawa
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Shimotsuke, Tochigi 329-0498, Japan
| | - Akira Nishizono
- Department of Microbiology, Faculty of Medicine and Research Center for Global and Local Infectious Diseases, Oita University, Yufu, Oita 879-5593, Japan
| | - Manri Kawakami
- Center for Liver Disease, Okayama Saiseikai General Hospital, Okayama, Okayama 700-8511, Japan
| | - Yukihiro Sato
- Department of Internal Medicine, Kamiichi General Hospital, Nakaniikawa-gun, Toyama 930-0391, Japan
| | - Kazunori Kawakami
- Ayagawa National Health Insurance Sue Hospital, Ayauta-gun, Kagawa 761-2103, Japan
| | | | - Tomoko Tamaru
- Nishiizu Ken-ikukai Hospital, Kamo-gun, Shizuoka 410-3514, Japan
| | - Shinichi Miyazaki
- Department of Gastroenterology, Tottori Seikyo Hospital, Tottori, Tottori 680-0833, Japan
| | - Mizuho Shimada
- Health Care Center, Jichi Medical University Hospital, Shimotsuke, Tochigi 329-0434, Japan
| | | | - Putu Prathiwi Primadharsini
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Shimotsuke, Tochigi 329-0498, Japan
| | - Shigeo Nagashima
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Shimotsuke, Tochigi 329-0498, Japan
| | - Kazumoto Murata
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Shimotsuke, Tochigi 329-0498, Japan
| | - Hiroaki Okamoto
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Shimotsuke, Tochigi 329-0498, Japan.
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2
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Raya S, Tandukar S, Kattel HP, Sharma S, Sangsanont J, Sirikanchana K, Ngo HTT, Inson JGM, Enriquez MLD, Alam ZF, Setiyawan AS, Setiadi T, Haramoto E. Prevalence of hepatitis A and E viruses in wastewater in Asian countries. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175473. [PMID: 39142413 DOI: 10.1016/j.scitotenv.2024.175473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Revised: 08/09/2024] [Accepted: 08/10/2024] [Indexed: 08/16/2024]
Abstract
Hepatitis A and E viruses (HAV and HEV, respectively) remain a significant global health concern despite advancements in healthcare and vaccination programs. Regular monitoring and vaccine efficacy of HAV are still lacking in different countries. This study aimed to investigate HAV and HEV prevalence in developed, developing, and least-developed Asian countries using wastewater as a surveillance tool. A total of 232 untreated wastewater samples were collected from six wastewater treatment plants, a sewage treatment plant, or an open drainage in six countries [Nepal (n = 51), Indonesia (n = 37), Thailand (n = 30), Vietnam (n = 27), the Philippines (n = 17), and Japan (n = 70)] between April and October 2022. Viruses in wastewater were concentrated by simple centrifugation or polyethylene glycol precipitation method, followed by viral RNA extraction and reverse transcription-quantitative polymerase chain reaction. HAV and HEV RNA were detected in the samples from Nepal (51 % for HAV and 2 % for HEV), Thailand (3 % for both viruses), and Japan (1 % for HAV and 24 % for HEV). Only HAV RNA was found in 11 % of the samples in Indonesia, whereas only HEV RNA was detected in Vietnam and the Philippines, with a positive ratio of 15 % and 12 %, respectively. These results highlighted the geographic variability in HAV and HEV prevalence, underscoring the need for localized public health strategies to address specific viral hepatitis challenges in each country.
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Affiliation(s)
- Sunayana Raya
- Department of Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan
| | - Sarmila Tandukar
- Organization for Public Health and Environment Management, Lalitpur, Nepal
| | - Hari Prasad Kattel
- Department of Microbiology, Tribhuvan University Teaching Hospital, Kathmandu, Nepal
| | - Sangita Sharma
- Department of Microbiology, Tribhuvan University Teaching Hospital, Kathmandu, Nepal.
| | - Jatuwat Sangsanont
- Department of Environmental Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand; Water Science and Technology for Sustainable Environmental Research Unit, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Kwanrawee Sirikanchana
- Research Laboratory of Biotechnology, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Rd., Talat Bang Khen, Lak Si, Bangkok 10210, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Bangkok 10400, Thailand.
| | - Huong Thi Thuy Ngo
- Faculty of Biotechnology, Chemistry and Environmental Engineering, Phenikaa University, Yen Nghia, Ha Dong, Hanoi 12116, Viet Nam; Environmental Chemistry and Ecotoxicology Lab, Phenikaa University, Yen Nghia Ward - Ha Dong District, Hanoi 12116, Viet Nam.
| | - Jessamine Gail M Inson
- Department of Biology, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines; Environmental Biomonitoring Research Unit, Center for Natural Sciences and Environmental Research, De La Salle University, Manila 1004, Philippines.
| | - Ma Luisa D Enriquez
- Department of Biology, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines; Environmental Biomonitoring Research Unit, Center for Natural Sciences and Environmental Research, De La Salle University, Manila 1004, Philippines.
| | - Zeba F Alam
- Department of Biology, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines; Environmental Biomonitoring Research Unit, Center for Natural Sciences and Environmental Research, De La Salle University, Manila 1004, Philippines.
| | - Ahmad Soleh Setiyawan
- Department of Environmental Engineering, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, Indonesia; Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jl. Ganesa No. 10, Bandung 40132, Indonesia.
| | - Tjandra Setiadi
- Department of Chemical Engineering, Institut Teknologi Bandung, Jl. Ganesa 10, Bandung 40132, Indonesia.
| | - Eiji Haramoto
- Interdisciplinary Center for River Basin Environment, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.
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3
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ZHANG W, DOAN YH, LI TC. Detection and isolation of genotype 3 subtype b hepatitis E viruses from wild boars in Japan. J Vet Med Sci 2024; 86:524-528. [PMID: 38556348 PMCID: PMC11144545 DOI: 10.1292/jvms.23-0478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/15/2024] [Indexed: 04/02/2024] Open
Abstract
To conduct an epidemiological study of hepatitis E virus (HEV) in Japanese wild boars, we collected 179 serum and 162 fecal specimens from wild boars in eight Japanese prefectures; 39 of the serum samples (21.8%) were positive for anti-HEV IgG antibodies. RT-qPCR revealed HEV RNA in 11 serum samples (6.1%) and 5 fecal samples (3.1%). We obtained 412 bp of the viral genome sequences of ORF2 from five pairs of serum and fecal samples. All strains were subtype b in genotype 3 (HEV-3b) but separated into different clusters. We determined the entire genome sequence of HEV-3b strain WB0567 using a fecal specimen and isolated this strain by cell culture using PLC/PRF/5 cells. Eleven nucleotide mutations had occurred during virus replication. These results suggest that HEV-3b circulated uniformly among wild boars in Japan. Direct sequencing using a suspected animal's samples is indispensable for predicting original HEV nucleotide sequences.
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Affiliation(s)
- Wenjing ZHANG
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yen Hai DOAN
- Center for Emergency Preparedness and Response, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tian-Cheng LI
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
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4
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Vasconcelos MPA, de Oliveira JM, Sánchez-Arcila JC, Faria SC, Rodrigues MM, Perce-da-Silva D, Rezende-Neto J, Pinto MA, Maia-Herzog M, Banic DM, Oliveira-Ferreira J. Seroprevalence of the Hepatitis E Virus in Indigenous and Non-Indigenous Communities from the Brazilian Amazon Basin. Microorganisms 2024; 12:365. [PMID: 38399768 PMCID: PMC10891770 DOI: 10.3390/microorganisms12020365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024] Open
Abstract
Hepatitis E virus (HEV) infection is a common cause of acute viral hepatitis in tropical regions. In Brazil, HEV G3 is the only genotype detected to date. Reports on HEV prevalence are heterogeneous. We aimed to compare the prevalence of anti-HEV among three populations living in the Brazilian Amazon basin. Two cross-sectional studies were conducted in urban, rural, and Yanomami indigenous areas. Plasma samples from 428 indigenous and 383 non-indigenous subjects were tested for anti-HEV IgG using enzyme-linked immunosorbent assays. The overall prevalence of anti-HEV was 6.8% (95%CI: 5.25-8.72), with 2.8% (12/428) found in the Yanomami areas, 3% (3/101) in an urban area, and 14.2% (40/282) in a rural area. Multivariate logistic analysis indicated that patients aged 31-45 years or ≥46 years are more likely to present anti-HEV positivity, with a respective aOR of 2.76 (95%CI: 1.09-7.5) and 4.27 (95%CI: 1.58-12.35). Furthermore, residence in a rural area (aOR: 7.67; 95%CI: 2.50-33.67) represents a relevant risk factor for HEV infection. Additional studies detecting HEV RNA in fecal samples from both humans and potential animal reservoirs are necessary to comprehensively identify risk factors associated with HEV exposure.
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Affiliation(s)
- Mariana Pinheiro Alves Vasconcelos
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz—FIOCRUZ/IOC, Rio de Janeiro 21045-900, Brazil; (M.P.A.V.); (J.C.S.-A.)
- Centro de Medicina Tropical de Rondônia—CEMETRON, Porto Velho 76812-329, Brazil
| | - Jaqueline Mendes de Oliveira
- Laboratório de Desenvolvimento Tecnológico em Virologia, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro 21045-900, Brazil; (J.M.d.O.); (S.C.F.); (M.A.P.)
| | - Juan Camilo Sánchez-Arcila
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz—FIOCRUZ/IOC, Rio de Janeiro 21045-900, Brazil; (M.P.A.V.); (J.C.S.-A.)
| | - Sarah Castro Faria
- Laboratório de Desenvolvimento Tecnológico em Virologia, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro 21045-900, Brazil; (J.M.d.O.); (S.C.F.); (M.A.P.)
| | | | - Daiana Perce-da-Silva
- Laboratório de Imunologia Clínica, Instituto Oswaldo Cruz—FIOCRUZ/IOC, Rio de Janeiro 21045-900, Brazil; (D.P.-d.-S.); (D.M.B.)
| | | | - Marcelo Alves Pinto
- Laboratório de Desenvolvimento Tecnológico em Virologia, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro 21045-900, Brazil; (J.M.d.O.); (S.C.F.); (M.A.P.)
| | - Marilza Maia-Herzog
- Laboratório de Referência Nacional em Simulídeos, Oncocercose e Mansonelose, Coleção de Simulídeos do Instituto Oswaldo Cruz—FIOCRUZ/IOC, Rio de Janeiro 21045-900, Brazil;
| | - Dalma Maria Banic
- Laboratório de Imunologia Clínica, Instituto Oswaldo Cruz—FIOCRUZ/IOC, Rio de Janeiro 21045-900, Brazil; (D.P.-d.-S.); (D.M.B.)
| | - Joseli Oliveira-Ferreira
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz—FIOCRUZ/IOC, Rio de Janeiro 21045-900, Brazil; (M.P.A.V.); (J.C.S.-A.)
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5
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Nemes K, Persson S, Simonsson M. Hepatitis A Virus and Hepatitis E Virus as Food- and Waterborne Pathogens-Transmission Routes and Methods for Detection in Food. Viruses 2023; 15:1725. [PMID: 37632066 PMCID: PMC10457876 DOI: 10.3390/v15081725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Foodborne viruses are an important threat to food safety and public health. Globally, there are approximately 5 million cases of acute viral hepatitis due to hepatitis A virus (HAV) and hepatitis E virus (HEV) every year. HAV is responsible for numerous food-related viral outbreaks worldwide, while HEV is an emerging pathogen with a global health burden. The reported HEV cases in Europe have increased tenfold in the last 20 years due to its zoonotic transmission through the consumption of infected meat or meat products. HEV is considered the most common cause of acute viral hepatitis worldwide currently. This review focuses on the latest findings on the foodborne transmission routes of HAV and HEV and the methods for their detection in different food matrices.
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Affiliation(s)
- Katalin Nemes
- European Union Reference Laboratory for Foodborne Viruses, Swedish Food Agency, Dag Hammarskjölds väg 56 A, 75237 Uppsala, Sweden; (S.P.); (M.S.)
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6
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Pirani S, Pierini I, Manuali E, Bazzucchi M, De Mia GM, Giammarioli M. Paslahepevirus balayani (Hepatitis E Virus) in Italian Nonungulate Wildlife: Molecular Detection and Characterization of an Isolate from a Crested Porcupine (Hystrix cristata). J Wildl Dis 2023; 59:460-464. [PMID: 37167074 DOI: 10.7589/jwd-d-22-00087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 01/20/2023] [Indexed: 05/13/2023]
Abstract
Paslahepevirus balayani (hepatitis E virus [HEV]) is the causative agent of hepatitis E, a worldwide zoonosis involving a wide range of hosts among domestic and wild animals. This species is characterized by a great genomic heterogeneity and includes eight genotypes, HEV-1 to HEV-8. The HEV-3 genotype is one of the most common types circulating in Italy in humans and Suidae. Although domestic and wild Sus scrofa and deer (Cervidae) are recognized as the main reservoirs of HEV, several other wild species are potential carriers. A total of 228 liver samples were collected from nonungulate wild animals, found dead, in the framework of the regional passive surveillance program in Umbria and Marche regions (central Italy) during 2018-20. These were tested using real-time reverse-transcriptase PCR (RT-PCR) for detection of RNA of HEV-1 to HEV-4 and confirmed by nested RT-PCR assay. One of the 11 samples collected from crested porcupines (Hystrix cristata) tested positive for the presence of HEV RNA; all other samples were negative. Sequence analysis based on the full-length genome revealed that this isolate, 49434/UM/2018 (accession no. OL658617), belongs to the HEV-3e subtype. These findings suggest a potential role of crested porcupines as a carrier of HEV infection.
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Affiliation(s)
- Silvia Pirani
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati", via Gaetano Salvemini 1, 06126 Perugia, Italy
| | - Ilaria Pierini
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati", via Gaetano Salvemini 1, 06126 Perugia, Italy
| | - Elisabetta Manuali
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati", via Gaetano Salvemini 1, 06126 Perugia, Italy
| | - Moira Bazzucchi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, via Antonio Bianchi 7/9, 24124 Brescia, Italy
| | - Gian Mario De Mia
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati", via Gaetano Salvemini 1, 06126 Perugia, Italy
| | - Monica Giammarioli
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati", via Gaetano Salvemini 1, 06126 Perugia, Italy
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7
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Geng Y, Shi T, Wang Y. Transmission of Hepatitis E Virus. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1417:73-92. [PMID: 37223860 DOI: 10.1007/978-981-99-1304-6_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Transmission of hepatitis E virus (HEV) occurs predominantly by the fecal-oral route. Large epidemics of hepatitis E in the developing countries of Asia and Africa are waterborne and spread through contaminated drinking water. The reservoir of HEV in developed countries is believed to be in animals with zoonotic transmission to humans, possibly through direct contact or the consumption of undercooked contaminated meat. And HEV transmission through blood transfusion, organ transplantation, and vertical transmission has been reported.
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Affiliation(s)
- Yansheng Geng
- Key Laboratory of Public Health Safety of Hebei Province, School of Public Health, Hebei University, Baoding, China
| | - Tengfei Shi
- Key Laboratory of Public Health Safety of Hebei Province, School of Public Health, Hebei University, Baoding, China
| | - Youchun Wang
- Institute of Medical Biology, Chinese Academy of Medical Science & Peking Union Medical College, Kunming, China.
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8
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Wang Y, Zhao C, Qi Y, Geng Y. Hepatitis E Virus. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1417:1-13. [PMID: 37223855 DOI: 10.1007/978-981-99-1304-6_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Since the sequence of hepatitis E virus (HEV) was determined from a patient with enterically transmitted non-A, non-B hepatitis in 1989, similar sequences have been isolated from many different animals, including pigs, wild boars, deer, rabbits, bats, rats, chicken, and trout. All of these sequences have the same genomic organization, which contains open reading frames (ORFs) 1, 2, and 3, although their genomic sequences are variable. Some have proposed that they be classified as new family, Hepeviridae, which would be further divided into different genera and species according to their sequence variability. The size of these virus particles generally ranged from 27 to 34 nm. However, HEV virions produced in cell culture differ in structure from the viruses found in feces. Those from cell culture have a lipid envelope and either lack or have a little ORF3, whereas the viruses isolated from feces lack a lipid envelope but have ORF3 on their surfaces. Surprisingly, most of the secreted ORF2 proteins from both these sources are not associated with HEV RNA.
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Affiliation(s)
- Youchun Wang
- Institute of Medical Biology, Chinese Academy of Medical Science & Peking Union Medical College, Kunming, China.
| | - Chenyan Zhao
- Division of HIV/AIDS and Sex-Transmitted Virus Vaccines, National Institutes for Food and Drug Control, Beijing, China
| | - Ying Qi
- Division of HIV/AIDS and Sex-Transmitted Virus Vaccines, National Institutes for Food and Drug Control, Beijing, China
| | - Yansheng Geng
- Key Laboratory of Public Health Safety of Hebei Province, School of Public Health, Hebei University, Baoding, China
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9
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Shata MTM, Hetta HF, Sharma Y, Sherman KE. Viral hepatitis in pregnancy. J Viral Hepat 2022; 29:844-861. [PMID: 35748741 PMCID: PMC9541692 DOI: 10.1111/jvh.13725] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 12/17/2021] [Accepted: 06/13/2022] [Indexed: 12/09/2022]
Abstract
Viral hepatitis is caused by a heterogenous group of viral agents representing a wide range of phylogenetic groups. Many viruses can involve the liver and cause liver injury but only a subset are delineated as 'hepatitis viruses' based upon their primary site of replication and tropism for hepatocytes which make up the bulk of the liver cell population. Since their discovery, beginning with the agent that caused serum hepatitis in the 1960s, the alphabetic designations have been utilized. To date, we have five hepatitis viruses, A through E, though it is postulated that others may exist. This chapter will focus on those viruses. Note that hepatitis D is included as a subset of hepatitis B, as it cannot exist without concurrent hepatitis B infection. Pregnancy has the potential to affect all aspects of these viral agents due to the unique immunologic and physiologic changes that occur during and after the gestational period. In this review, we will discuss the most common viral hepatitis and their effects during pregnancy.
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Affiliation(s)
- Mohamed Tarek M. Shata
- Division of Digestive Disease, Department of Internal MedicineUniversity of CincinnatiCincinnatiOhioUSA
| | - Helal F. Hetta
- Division of Digestive Disease, Department of Internal MedicineUniversity of CincinnatiCincinnatiOhioUSA,Department of Medical Microbiology and Immunology, Faculty of MedicineAssiut UniversityAssiutEgypt
| | - Yeshika Sharma
- Division of Digestive Disease, Department of Internal MedicineUniversity of CincinnatiCincinnatiOhioUSA
| | - Kenneth E. Sherman
- Division of Digestive Disease, Department of Internal MedicineUniversity of CincinnatiCincinnatiOhioUSA
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10
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Gong W, Du H, Sun X, Sun H, Peng P, Qin S, Geng H, Zeng Z, Liang W, Ling H, Tu C, Tu Z. Genetic characterization of hepatitis E virus from wild boar in China. Transbound Emerg Dis 2022; 69:e3357-e3362. [PMID: 35717589 DOI: 10.1111/tbed.14633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/15/2022] [Accepted: 06/15/2022] [Indexed: 11/26/2022]
Abstract
Hepatitis E virus (HEV), the causative agent of hepatitis E (HE), is classified into four major genotypes (1-4), with wild boar being the main natural reservoir for genotypes 3 and 4. However, little is known about the prevalence of HEV infection in wild boars in China. In this study, RT-nested PCR and RT-quantitative PCR were used to detect the HEV RNA in tissue samples taken from 331 free-ranging wild boars collected between 2018 and 2020 from 24 regions across China, and the partial ORF2 genes or complete genomes of the positive samples were sequenced. Furthermore, antibodies against HEV in 216 serum samples from wild boars were tested by ELISA. As a result, HEV RNA was detected in nine out of 331 liver samples of wild boars (2.72%), which were distributed in eight regions. Genetic and evolutionary analysis of partial ORF2 sequences indicated that the HEV strains identified in this study share 83.9%-100% nucleotide sequence identity and belong to subtypes 4d (n = 6), 4g (n = 2), and 4h (n = 1), and similar phylogeny was obtained using the complete genome sequences of seven wild boar HEV strains. Additionally, the HEV viral loads were higher in the liver than in other tissues and blood. Moreover, 61 out of 216 sera (28.2%) from wild boars tested positive for anti-HEV antibodies. To our knowledge, this is the first study to report the epidemiological situations of HEV infections in free-ranging wild boars in China, and the obtained data are valuable for prevention and control of HE.
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Affiliation(s)
- Wenjie Gong
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China.,Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Haiying Du
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Xuefei Sun
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Heting Sun
- Biological Disaster Control and Prevention Center, National Forestry and Grassland Administration, Shenyang, China
| | - Peng Peng
- Biological Disaster Control and Prevention Center, National Forestry and Grassland Administration, Shenyang, China
| | - Siyuan Qin
- Biological Disaster Control and Prevention Center, National Forestry and Grassland Administration, Shenyang, China
| | - Haidong Geng
- Biological Disaster Control and Prevention Center, National Forestry and Grassland Administration, Shenyang, China
| | - Zheng Zeng
- Chongqing Animal Disease Prevention and Control Center, Chongqing, China
| | - Wangwang Liang
- Chongqing Animal Disease Prevention and Control Center, Chongqing, China
| | - Hongquan Ling
- Chongqing Animal Disease Prevention and Control Center, Chongqing, China
| | - Changchun Tu
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China.,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, China
| | - Zhongzhong Tu
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
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11
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Potential zoonotic swine enteric viruses: The risk ignored for public health. Virus Res 2022; 315:198767. [PMID: 35421434 DOI: 10.1016/j.virusres.2022.198767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 03/30/2022] [Accepted: 04/03/2022] [Indexed: 12/28/2022]
Abstract
Swine could serve as a natural reservoir for a large variety of viruses, including potential zoonotic enteric viruses. The presence of viruses with high genetic similarity between porcine and human strains may result in the emergence of zoonotic or xenozoonotic infections. Furthermore, the globalization and intensification of swine industries exacerbate the transmission and evolution of zoonotic viruses among swine herds and individuals working in swine-related occupations. To effectively prevent the public health risks posed by zoonotic swine enteric viruses, designing, and implementing a comprehensive measure for early diagnosis, prevention, and mitigation, requires interdisciplinary a collaborative ''One Health" approach from veterinarians, environmental and public health professionals, and the swine industry. In this paper, we reviewed the current knowledge of selected potential zoonotic swine enteric viruses and explored swine intensive production and its associated public health risks.
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MENDOZA MV, YONEMITSU K, ISHIJIMA K, KURODA Y, TATEMOTO K, INOUE Y, SHIMODA H, KUWATA R, TAKANO A, SUZUKI K, MAEDA K. Nationwide survey of hepatitis E virus infection among wildlife in Japan. J Vet Med Sci 2022; 84:992-1000. [PMID: 35675975 PMCID: PMC9353082 DOI: 10.1292/jvms.22-0237] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
In Japan, hepatitis E virus (HEV) causes hepatitis in humans through the consumption of raw or undercooked meat, including game meat. In the present study, nationwide surveillance of HEV
infection among a total of 5,557 wild animals, including 15 species, was conducted in Japan. The prevalence of anti-HEV antibodies in wild boar was 12.4%, with higher positive rates in big
boars (over 50 kg, 18.4%) than in small individuals (less than 30 kg, 5.3%). Furthermore, HEV RNA was more frequently detected in piglets than in older boars. Interestingly, the detection of
HEV among wildlife by ELISA and RT-PCR suggested that HEV infection in Sika deer was a very rare event, and that there was no HEV infection among wild animals except for wild boar, Sika deer
and Japanese monkeys. In conclusion, wild boar, especially piglets, are at high risk of HEV infection, while other wild animals showed less risk or no risk of HEV transmission.
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Affiliation(s)
| | - Kenzo YONEMITSU
- Department of Veterinary Science, National Institute of Infectious Diseases
| | - Keita ISHIJIMA
- Department of Veterinary Science, National Institute of Infectious Diseases
| | - Yudai KURODA
- Department of Veterinary Science, National Institute of Infectious Diseases
| | - Kango TATEMOTO
- Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Yusuke INOUE
- Joint Faculty of Veterinary Medicine, Yamaguchi University
| | | | - Ryusei KUWATA
- Faculty of Veterinary Medicine, Okayama University of Science
| | - Ai TAKANO
- Joint Faculty of Veterinary Medicine, Yamaguchi University
| | | | - Ken MAEDA
- Joint Faculty of Veterinary Medicine, Yamaguchi University
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Fanelli A, Tizzani P, Buonavoglia D. A systematic review and meta-analysis of hepatitis E virus (HEV) in wild boars. Res Vet Sci 2021; 142:54-69. [PMID: 34864434 DOI: 10.1016/j.rvsc.2021.11.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 05/02/2021] [Accepted: 11/26/2021] [Indexed: 12/19/2022]
Abstract
This systematic review and meta-analysis summarize the available information on Hepatitis E virus (HEV) -specific antibody seroprevalence and HEV RNA prevalence in wild boar, one of the most abundant game species worldwide. A literature search (CAB Abstracts, Web of Science, Embase and Scopus) was performed to find relevant peer-reviewed works published during the period 1990-2020. A random-effect model was carried out to calculate the pooled HEV-specific antibody seroprevalence and HEV RNA prevalence estimates with 95% confidence intervals, and I2 statistic was used to assess the heterogeneity of the data. Values by subgroups were compared according to the geographical area, age class (≤ 12 months old and > 12 months old), and sample type (bile, faeces, liver, meat/muscle, serum). Sixty-nine publications were selected, with the majority of the studies from Southern Europe (n = 27). The pooled HEV-specific antibody seroprevalence in wild boar was 28% (CI95% 23-34) and the HEV RNA prevalence 8% (CI95% 6-10). The analysis highlighted a significant heterogeneity among the estimates from the included studies (I2 = 98% and I2 = 95% for HEV-specific antibody seroprevalence and viral prevalence respectively). The moderator analysis indicated a statistically significant difference (p-value = 0.03) for the HEV RNA prevalence according to the sample type, with the highest value in bile (17%, CI95% 9-27), followed by liver (10%, CI95% 7-14), serum (7%, CI95% 4-10), faeces (5%, CI95% 2-9), and meat/muscle (3%, CI95% 0.04-10). Finally, the HEV RNA prevalence in Europe (8.7, CI95% 6.7-11) was significantly (p-value = 0.04) higher than in Asia (4, CI95% 0.6-8). The analysis highlights the important role of wild boar in the epidemiology of HEV.
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Affiliation(s)
- Angela Fanelli
- Department of Veterinary Medicine, University of Bari, Valenzano, Bari, Italy.
| | - Paolo Tizzani
- Department of Veterinary Sciences, University of Turin, Grugliasco, Turin, Italy
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Li S, He Q, Yan L, Li M, Liang Z, Shu J, Zhang F, Wang L, Wang L. Infectivity and pathogenicity of different hepatitis E virus genotypes/subtypes in rabbit model. Emerg Microbes Infect 2021; 9:2697-2705. [PMID: 33251979 PMCID: PMC7781933 DOI: 10.1080/22221751.2020.1858178] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The pathogenicity of each hepatitis E virus (HEV) genotypes/subtypes may be different. This study aimed to investigate the infectivity and pathogenicity of different HEV genotypes/subtypes from different mammalian sources especially human in rabbits, and to assess whether rabbits are an appropriate animal model to study different HEV genotypes/subtypes. Thirty-seven rabbits were randomly divided into nine groups and inoculated with eight different HEV strains, including human-derived HEV3b (hHEV-3b), hHEV-4a, hHEV-4d and hHEV-4h, swine-derived HEV4d (sHEV-4d) and sHEV-4h, rabbit-derived HEV3 (HEV-3ra) and camel-derived HEV8. HEV RNA, antigen, anti-HEV and alanine aminotransferase (ALT) in serum or/and feces were monitored weekly. One rabbit from each group was euthanized at seven weeks post inoculation and the liver specimens were taken for histopathological analysis and immunofluorescence staining of HEV ORF2 proteins. hHEV-4d, sHEV-4d and HEV-3ra infections were successfully established in rabbits and typical acute hepatitis symptoms were observed, including viraemia/antigenemia, fecal virus/antigen shedding, elevated ALT level and liver histopathological changes. One rabbit infected with HEV-3ra showed chronic infection. hHEV-4d and sHEV-4d are less infectious and pathogenic than HEV-3ra in rabbits. hHEV-3b and HEV8 only caused inapparent infection in rabbits as 60% (3/5) and 20% (1/5) of the rabbits seroconverted to anti-HEV, respectively. No obvious signs of HEV infection in rabbits inoculated with hHEV-4a, hHEV-4h and sHEV-4h. The infectivity and pathogenicity of different HEV genotypes/subtypes in rabbits is different, which may be related to the species specificity of HEV. Rabbit can be used as an animal model for the study of HEV-3ra and more importantly human HEV-4d.
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Affiliation(s)
- Shuangshuang Li
- Department of Microbiology and Infectious Disease Centre, School of Basic Medical Sciences, Peking University Health Science Centre, Beijing, People's Republic of China
| | - Qiyu He
- Department of Microbiology and Infectious Disease Centre, School of Basic Medical Sciences, Peking University Health Science Centre, Beijing, People's Republic of China
| | - Li Yan
- Department of Severe Hepatology, Shanghai Public Health Clinical Centre, Fudan University, Shanghai, People's Republic of China
| | - Manyu Li
- Department of Microbiology and Infectious Disease Centre, School of Basic Medical Sciences, Peking University Health Science Centre, Beijing, People's Republic of China
| | - Zhaochao Liang
- Department of Microbiology and Infectious Disease Centre, School of Basic Medical Sciences, Peking University Health Science Centre, Beijing, People's Republic of China
| | - Jingyi Shu
- Department of Microbiology and Infectious Disease Centre, School of Basic Medical Sciences, Peking University Health Science Centre, Beijing, People's Republic of China
| | - Fan Zhang
- Department of Microbiology and Infectious Disease Centre, School of Basic Medical Sciences, Peking University Health Science Centre, Beijing, People's Republic of China
| | - Ling Wang
- Department of Microbiology and Infectious Disease Centre, School of Basic Medical Sciences, Peking University Health Science Centre, Beijing, People's Republic of China
| | - Lin Wang
- Department of Microbiology and Infectious Disease Centre, School of Basic Medical Sciences, Peking University Health Science Centre, Beijing, People's Republic of China
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Al Absi ES, Al-Sadeq DW, Khalili M, Younes N, Al-Dewik N, Abdelghany SK, Abouzid SS, Al Thani AA, Yassine HM, Coyle PV, Nasrallah GK. The prevalence of HEV among non-A-C hepatitis in Qatar and efficiency of serological markers for the diagnosis of hepatitis E. BMC Gastroenterol 2021; 21:266. [PMID: 34130641 PMCID: PMC8207580 DOI: 10.1186/s12876-021-01841-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 06/08/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The rapid growth of Qatar in the last two decades has attracted a large influx of immigrant workers who mostly come from HEV-hyperendemic countries. Thus, we aim to investigate the prevalence of HEV among acute non-A-C hepatitis patients in Qatar; and to evaluate the performance of four dominant commercial serological assays for HEV diagnosis. METHODS 259 patients with non-A-C hepatitis were tested using the Wantai HEV-IgM, HEV-IgG, HEV-Ag ELISA kits, and the MP Biomedical HEV-Total Ab ELISA kit. ALT levels were tested and HEV RNA (viral loads) was performed using Taqman AmpliCube HEV RT-PCR kit (Mikrogen, Neuried, Germany). The performance of each kit was assessed according to the RT-PCR results. RESULTS HEV-RNA was detected in 23.1% of the samples. Most of these HEV-RNA-positive cases belonged to non-Qatari residents from the Indian subcontinent; India, Pakistan, etc. HEV-Ag, HEV-IgM, HEV-IgG, HEV-Total Ab were detected in 5.56%, 8.65%, 32.1%, and 34.2% of all tested samples, respectively. Elevated ALT levels were highly correlated with the HEV-Ag, HEV-IgM, HEV-RNA but not with the HEV-IgG and HEV-Total Ab. Although HEV-Ag was very specific (100%), yet its sensitivity was poor (36.7%). HEV-IgM demonstrated the best second marker for diagnosis of acute HEV after RT-PCR as jugged by the overall performance parameters: specificity (96.2%), sensitivity (71.4%), PPV (83.3%), NPP (92.7%), agreement with RT-PCR (91.0%), and Kappa-value (0.71). CONCLUSION Our study demonstrated a high prevalence of HEV virus in Qatar, mostly among immigrants from the Indian subcontinent. The HEV-IgM represents the best marker for detecting the acute HEV infection, where RT-PCR cannot be performed.
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Affiliation(s)
- Enas S Al Absi
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Duaa W Al-Sadeq
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar.,College of Medicine, Member of QU Health, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Makiyeh Khalili
- Department of Laboratory Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Nadin Younes
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Nader Al-Dewik
- Clinical and Metabolic Genetics Section, Pediatrics Department, Hamad General Hospital, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.,Qatar Medical Genetic Center and Interim Translational Research Institute, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.,College of Health and Life Science, Hamad Bin Khalifa University, P.O. Box 34110, Doha, Qatar.,Department of Pediatrics, Women's Wellness and Research Center, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Sara K Abdelghany
- Department of Biomedical Science, College of Health Sciences, Member of QU Health, Qatar University, Women's Science Building, C01, P.O. Box 2713, Doha, Qatar
| | - Somaia S Abouzid
- Department of Biomedical Science, College of Health Sciences, Member of QU Health, Qatar University, Women's Science Building, C01, P.O. Box 2713, Doha, Qatar
| | - Asma A Al Thani
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar.,Department of Biomedical Science, College of Health Sciences, Member of QU Health, Qatar University, Women's Science Building, C01, P.O. Box 2713, Doha, Qatar
| | - Hadi M Yassine
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar.,Department of Biomedical Science, College of Health Sciences, Member of QU Health, Qatar University, Women's Science Building, C01, P.O. Box 2713, Doha, Qatar
| | - Peter V Coyle
- Virology Laboratory, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Gheyath K Nasrallah
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar. .,Department of Biomedical Science, College of Health Sciences, Member of QU Health, Qatar University, Women's Science Building, C01, P.O. Box 2713, Doha, Qatar.
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A broadly cross-reactive monoclonal antibody against hepatitis E virus capsid antigen. Appl Microbiol Biotechnol 2021; 105:4957-4973. [PMID: 34129082 PMCID: PMC8236046 DOI: 10.1007/s00253-021-11342-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 04/28/2021] [Accepted: 05/09/2021] [Indexed: 12/27/2022]
Abstract
Abstract To generate a hepatitis E virus (HEV) genotype 3 (HEV-3)–specific monoclonal antibody (mAb), the Escherichia coli–expressed carboxy-terminal part of its capsid protein was used to immunise BALB/c mice. The immunisation resulted in the induction of HEV-specific antibodies of high titre. The mAb G117-AA4 of IgG1 isotype was obtained showing a strong reactivity with the homologous E. coli, but also yeast-expressed capsid protein of HEV-3. The mAb strongly cross-reacted with ratHEV capsid protein derivatives produced in both expression systems and weaker with an E. coli–expressed batHEV capsid protein fragment. In addition, the mAb reacted with capsid protein derivatives of genotypes HEV-2 and HEV-4 and common vole hepatitis E virus (cvHEV), produced by the cell-free synthesis in Chinese hamster ovary (CHO) and Spodoptera frugiperda (Sf21) cell lysates. Western blot and line blot reactivity of the mAb with capsid protein derivatives of HEV-1 to HEV-4, cvHEV, ratHEV and batHEV suggested a linear epitope. Use of truncated derivatives of ratHEV capsid protein in ELISA, Western blot, and a Pepscan analysis allowed to map the epitope within a partially surface-exposed region with the amino acid sequence LYTSV. The mAb was also shown to bind to human patient–derived HEV-3 from infected cell culture and to hare HEV-3 and camel HEV-7 capsid proteins from transfected cells by immunofluorescence assay. The novel mAb may serve as a useful tool for further investigations on the pathogenesis of HEV infections and might be used for diagnostic purposes. Key points • The antibody showed cross-reactivity with capsid proteins of different hepeviruses. • The linear epitope of the antibody was mapped in a partially surface-exposed region. • The antibody detected native HEV-3 antigen in infected mammalian cells. Supplementary Information The online version contains supplementary material available at 10.1007/s00253-021-11342-7.
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Mrzljak A, Jemersic L, Savic V, Balen I, Ilic M, Jurekovic Z, Pavicic-Saric J, Mikulic D, Vilibic-Cavlek T. Hepatitis E Virus in Croatia in the "One-Health" Context. Pathogens 2021; 10:pathogens10060699. [PMID: 34199798 PMCID: PMC8227679 DOI: 10.3390/pathogens10060699] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/01/2021] [Accepted: 06/02/2021] [Indexed: 02/07/2023] Open
Abstract
Hepatitis E virus (HEV) is the most common cause of viral hepatitis globally. The first human case of autochthonous HEV infection in Croatia was reported in 2012, with the undefined zoonotic transmission of HEV genotype 3. This narrative review comprehensively addresses the current knowledge on the HEV epidemiology in humans and animals in Croatia. Published studies showed the presence of HEV antibodies in different population groups, such as chronic patients, healthcare professionals, voluntary blood donors and professionally exposed and pregnant women. The highest seroprevalence in humans was found in patients on hemodialysis in a study conducted in 2018 (27.9%). Apart from humans, different studies have confirmed the infection in pigs, wild boars and a mouse, indicating the interspecies transmission of HEV due to direct or indirect contact or as a foodborne infection. Continued periodical surveys in humans and animals are needed to identify the possible changes in the epidemiology of HEV infections.
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Affiliation(s)
- Anna Mrzljak
- Department of Gastroenterology and Hepatology, University Hospital Center Zagreb, 10000 Zagreb, Croatia
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
- Correspondence:
| | - Lorena Jemersic
- Department of Virology, Croatian Veterinary Institute, 10000 Zagreb, Croatia;
| | - Vladimir Savic
- Poultry Center, Croatian Veterinary Institute, 10000 Zagreb, Croatia;
| | - Ivan Balen
- Department of Gastroenterology and Endocrinology, General Hospital “Dr. Josip Bencevic”, 35000 Slavonski Brod, Croatia;
| | - Maja Ilic
- Department of Epidemiology, Croatian Institute of Public Health, 10000 Zagreb, Croatia;
| | - Zeljka Jurekovic
- Department of Medicine, Merkur University Hospital, 10000 Zagreb, Croatia;
| | - Jadranka Pavicic-Saric
- Department of Anestesiology, Reanimatology and Intensive Care, Merkur University Hospital, 10000 Zagreb, Croatia;
| | - Danko Mikulic
- Department of Abdominal and Transplant Surgery, Merkur University Hospital, 10000 Zagreb, Croatia;
| | - Tatjana Vilibic-Cavlek
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
- Department of Virology, Croatian Institute of Public Health, 10000 Zagreb, Croatia
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Tsachev I, Baymakova M, Marutsov P, Gospodinova K, Kundurzhiev T, Petrov V, Pepovich R. Seroprevalence of Hepatitis E Virus Infection Among Wild Boars in Western Bulgaria. Vector Borne Zoonotic Dis 2021; 21:441-445. [PMID: 33625897 DOI: 10.1089/vbz.2020.2756] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Scientific evidence indicates that hepatitis E virus (HEV) infection is a zoonotic disease. Domestic pigs and wild boars are the main animal reservoir for HEV worldwide. The aim of this study was to analyze the seroprevalence of HEV infection among wild boars in western Bulgaria. Serum samples from 240 wild boars from two regions of the country (northwestern and southwestern) were tested for anti-HEV Immunoglobulin G (IgG) antibodies. The overall HEV seroprevalence was 40.8% (98/240); northwestern region 40.0% (48/120); southwestern region 41.7% (50/120). HEV seropositivity in the southwestern region was higher than in the northwestern region: odds ratio = 1.071 (95% confidence interval: 0.640-1.793). This research provided the first seroprevalence study to HEV in wild boars from western Bulgaria.
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Affiliation(s)
- Ilia Tsachev
- Department of Microbiology, Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - Magdalena Baymakova
- Department of Infectious Diseases, Military Medical Academy, Sofia, Bulgaria
| | - Plamen Marutsov
- Department of Microbiology, Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - Krasimira Gospodinova
- Department of Microbiology, Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - Todor Kundurzhiev
- Department of Occupational Medicine, Faculty of Public Health, Medical University, Sofia, Bulgaria
| | - Vladimir Petrov
- Department of Microbiology, Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - Roman Pepovich
- Department of Infectious Pathology, Hygiene, Technology and Control of Foods from Animal Origin, Faculty of Veterinary Medicine, University of Forestry, Sofia, Bulgaria
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Seroprevalence of Hepatitis E Virus in Moose ( Alces alces), Reindeer ( Rangifer tarandus), Red Deer ( Cervus elaphus), Roe Deer ( Capreolus capreolus), and Muskoxen ( Ovibos moschatus) from Norway. Viruses 2021; 13:v13020224. [PMID: 33535675 PMCID: PMC7912786 DOI: 10.3390/v13020224] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 12/18/2022] Open
Abstract
Hepatitis E virus (HEV), a major cause of viral hepatitis worldwide, is considered an emerging foodborne zoonosis in Europe. Pigs (Sus scrofa domestica) and wild boars (S. scrofa) are recognized as important HEV reservoirs. Additionally, HEV infection and exposure have been described in cervids. In Norway, HEV has been identified in pigs and humans; however, little is known regarding its presence in wild ungulates in the country. We used a species-independent double-antigen sandwich ELISA to detect antibodies against HEV in the sera of 715 wild ungulates from Norway, including 164 moose (Alces alces), 186 wild Eurasian tundra reindeer (Rangifer tarandus tarandus), 177 red deer (Cervus elaphus), 86 European roe deer (Capreolus capreolus), and 102 muskoxen (Ovibos moschatus). The overall seroprevalence was 12.3% (88/715). Wild reindeer had the highest seropositivity (23.1%, 43/186), followed by moose (19.5%, 32/164), muskoxen (5.9%, 6/102), and red deer (4%, 7/177). All roe deer were negative. According to our results, HEV is circulating in wild ungulates in Norway. The high seroprevalence observed in wild reindeer and moose indicates that these species may be potential reservoirs of HEV. To the authors’ knowledge, this is the first report of HEV exposure in reindeer from Europe and in muskoxen worldwide.
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Chen Y, Gong QL, Wang Q, Wang W, Wei XY, Jiang J, Ni HB. Prevalence of hepatitis E virus among swine in China from 2010 to 2019: A systematic review and meta-analysis. Microb Pathog 2020; 150:104687. [PMID: 33301857 DOI: 10.1016/j.micpath.2020.104687] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/16/2020] [Accepted: 12/02/2020] [Indexed: 02/07/2023]
Abstract
Hepatitis E virus (HEV) is a zoonotic pathogen that has spread worldwide. The HEV reservoir associated with livestock hepatitis E poses a huge threat to public health. Awareness of the prevalence and spatial distribution of livestock hepatitis E is valuable to prevent and control diseases caused by HEV, especially human hepatitis E infection. Currently, swine, including pigs (Sus scrofa), are recognized as the major reservoir of HEV. Therefore, we conducted a systematic review and meta-analysis to evaluate the pooled prevalence of HEV among swine in China. A total of 71 published papers on HEV infection in swine in China (including data from 49,523 animals) from January 1, 2010 to December 31, 2019 met the standard after searching five databases including the Technology Periodical Database, the Wan Fang Database, the China National Knowledge Infrastructure, PubMed, and ScienceDirect. A random effects model was used to calculate the pooled prevalence of HEV in swine. The results showed that the seroprevalence was 48.0% (95% confidence interval (CI) 39.6-56.9) and the prevalence of HEV RNA was 14.4% (95% CI 10.7-18.5). The estimated overall prevalence was 34.1% (95% CI 27.2-41.4). Central China (68.0%, 95% CI 42.2-89.1) had a significantly higher prevalence than other regions. In the publication year subgroup, the prevalence in 2016 or later (27.2%, 95% CI 19.3-36.0) was significantly lower than that in 2011 or earlier (49.0%, 95% CI 36.2-61.8). The prevalence of IgG (42.9%, 95% CI 31.7-54.6) was significantly higher than that of IgM (4.9%, 95% CI 1.6-9.7). Suckling piglets (15.6%, 95% CI 6.6-27.1) had a lower prevalence compared with that in other age groups. In all sample types, body fluids showed the highest prevalence (50.5%, 95% CI 41.7-59.3). Moreover, the pooled prevalence of HEV in boars was higher than that in sows (35.4% > 17.3%). The analysis suggested that HEV infection is common among swine in China. Further strengthening HEV testing in boars, controlling environmental pollution, and reducing the mixed feeding of different stages could contribute to reducing HEV infection in pigs in China and the risk of porcine HEV infection in humans.
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Affiliation(s)
- Yu Chen
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, PR China
| | - Qing-Long Gong
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province, 130118, PR China
| | - Qi Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province, 130118, PR China
| | - Wei Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, PR China
| | - Xin-Yu Wei
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, 163319, PR China
| | - Jing Jiang
- College of Life Science, Changchun Sci-Tech University, Shuangyang, Jilin Province, 130600, PR China.
| | - Hong-Bo Ni
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, PR China.
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A Nationwide Survey of Hepatitis E Virus Infection and Chronic Hepatitis in Heart and Kidney Transplant Recipients in Japan. Transplantation 2020; 104:437-444. [PMID: 31205267 PMCID: PMC7004465 DOI: 10.1097/tp.0000000000002801] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background. Recently, chronic hepatitis E has been reported in solid organ transplant (SOT) recipients in European countries. Previously, we clarified the prevalence of hepatitis E virus (HEV) infection in Japanese liver transplant recipients and identified 2 chronic hepatitis E patients infected by blood transfusion. However, the rate of HEV infection in recipients of SOTs other than liver in Japan remains unclear, so we conducted a nationwide survey to clarify the prevalence of chronic HEV infection in Japanese heart and kidney transplant recipients. Methods. A total of 99 heart and 2526 kidney transplant recipients in 17 hospitals in Japan were examined for the presence of the IgG class of anti-HEV antibodies as well as for serum HEV RNA. Results. The prevalence of anti-HEV IgG among heart and kidney transplant recipients was 7.07% (7/99) and 4.08% (103/2526), respectively. One heart transplant patient (1.01%) and 11 kidney transplant patients (0.44%) were found to be positive for HEV RNA. The HEV isolates from all viremic patients were typed as genotype 3. Four patients developed chronic hepatitis E after transplantation. Three patients were treated with ribavirin; their liver enzymes normalized, and HEV RNA became negative immediately. Sustained virologic response was achieved in all cases. Conclusions. This is the first nationwide survey of HEV infection in Japanese heart and kidney transplant recipients. The prevalence of anti-HEV IgG and HEV RNA in heart and kidney transplant recipients in Japan was lower than that in European countries. Of note, 42% of viremic transplant patients developed chronic hepatitis.
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Lee HS, Dao DT, Bui VN, Bui NA, Le TD, Nguyen-Viet H, Grace D, Thakur KK, Hagiwara K. Prevalence and phylogenetic analysis of hepatitis E virus in pigs in Vietnam. BMC Vet Res 2020; 16:333. [PMID: 32928220 PMCID: PMC7489210 DOI: 10.1186/s12917-020-02537-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 08/23/2020] [Indexed: 01/26/2023] Open
Abstract
Background Hepatitis E virus (HEV) is a zoonotic disease and has been reported around the world. The main objective of this study was to evaluate the sero-prevalence and phylogenetic analysis of HEV in Vietnam. Pig blood and fecal pooled samples were collected to assess the prevalence of HEV. We assessed the true prevalence (TP) of HEV from apparent prevalence (AP) by taking into account the sensitivity and specificity of diagnostic tests using a Bayesian approach. For phylogenetic analysis, the data compared with worldwide HEV reference strains including all eight genotypes (G1-G8) which were identified in previous study. Results A total of 475 sera and 250 fecal pooled samples were collected at slaughterhouses and pig farms from five provinces, in Viet Nam. Overall, the sero-AP of HEV was 58.53% (95% confidence interval: 53.95–62.70) while the sero-TP was slightly higher (65.43, 95% credible interval: 47.19–84.70). In terms of pooled samples, overall, the RNA-AP was 6.80% (95% confidence interval: 4.01–10.66). One strain in Hanoi, two strains in Dak Lak, seven strains in An Giang, four strains in Son La and two strains in Nghe An were isolated. The phylogenetic tree demonstrated that 19 Vietnamese strains were clustered into HEV 3 and 4. Conclusions This study provided evidence that HEV is circulating in domestic pigs in Vietnam. From a public health perspective, it is very important to raise public awareness for high-risk groups (e.g. slaughterhouse workers, pig traders, farmers and market sellers) who have more opportunities to come in contact with pig and contaminated meats.
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Affiliation(s)
- Hu Suk Lee
- International Livestock Research Institute (ILRI), Regional Office for East and Southeast Asia, Room 301-302, B1 Building, Van Phuc Diplomatic Compound, 298 Kim Ma Street, Ba Dinh District, Hanoi, Vietnam.
| | - Duy Tung Dao
- National Institute of Veterinary Research, Hanoi, Vietnam
| | | | - Ngoc Anh Bui
- National Institute of Veterinary Research, Hanoi, Vietnam
| | - Thanh Duy Le
- National Institute of Veterinary Research, Hanoi, Vietnam
| | - Hung Nguyen-Viet
- International Livestock Research Institute (ILRI), Regional Office for East and Southeast Asia, Room 301-302, B1 Building, Van Phuc Diplomatic Compound, 298 Kim Ma Street, Ba Dinh District, Hanoi, Vietnam
| | - Delia Grace
- International Livestock Research Institute (ILRI), Nairobi, Kenya.,Natural Resources Institute, Chatham, UK
| | - Krishna K Thakur
- Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Canada
| | - Katsuro Hagiwara
- School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai, Ebetsu, Hokkaido, 069-8501, Japan.
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Prevalence and genotype/subtype distribution of hepatitis E virus (HEV) among wild boars in Japan: Identification of a genotype 5 HEV strain. Virus Res 2020; 287:198106. [PMID: 32777387 DOI: 10.1016/j.virusres.2020.198106] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/28/2020] [Accepted: 07/29/2020] [Indexed: 02/06/2023]
Abstract
To further investigate the prevalence of hepatitis E virus (HEV) infection and characterize HEV genomes among Japanese wild boars (Sus scrofa leucomystax), 1880 boars captured in 17 prefectures in Japan from 2013 to 2019 were studied. Overall, anti-HEV IgG was detected in 8.9 % and HEV RNA was detected in 3.9 % of boars, which was comparable with our previous studies during 2003-2013 (10.3 % and 3.5 %, respectively). Among 74 boar HEV strains obtained from infected boars in the present study, 50 (68 %) were classified into genotype 3 (3a and 3b), 23 (31 %) were classified into genotype 4 (4i), and the remaining strain (wbJGF_19-1) was classified into genotype 5. The wbGF_19-1 strain shared 92.7 % identity over the entire genome with the prototype genotype 5 strain (JBOAR135-Shiz09). The identification of the second genotype 5 HEV strain in a place that is located only 100 km from the site at which JBOAR135-Shiz09 was identified, suggests that genotype 5 HEV circulates within a relatively close range in Japan. Genetically similar HEV strains forming a clade were identified from wild boars living in each area during the observation period of 11-13 years, although the nucleotide sequence changed gradually, accounting for up to 3.4-3.6 % within the 412-nucleotide ORF2 sequence. Eight groups of boars with a cluster of HEV infections were observed, consisting of two, three or four infected offspring, presumably born to the same mother or offspring with their mother. These results suggest that wild boars continue to be important reservoirs for HEV infection in humans in Japan.
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Sun J, Ren C, Huang Y, Chao W, Xie F. The effects of synonymous codon usages on genotypic formation of open reading frames in hepatitis E virus. INFECTION GENETICS AND EVOLUTION 2020; 85:104450. [PMID: 32629045 DOI: 10.1016/j.meegid.2020.104450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 06/08/2020] [Accepted: 06/27/2020] [Indexed: 12/27/2022]
Abstract
Hepatitis E virus (HEV) infection has emerged as an important public health issue. As a zoonotic RNA virus, new strains are continuously discovered from human or various animal species. However, the capability of cross-species infection varies largely among different strains. Because the classical nucleotide-based genotyping system provides little functional insight, this study aimed to comprehensively investigate codon usage of the HEV coding regions for better understanding the evolutional orientation, virus-host interaction and cross-species transmission. We observed significant differences of the four nucleotide usages in the three open reading frames, indicating that the evolutional tendency of HEV caused by mutation pressure is modified by the evolutional dynamic related to positive selection. Furthermore, significant differences of nucleotide usages were found among HEV isolated from different host species, suggesting an important role of natural selection related to the host. Analysis of effective number of codons revealed distinct degrees of biased codon usage caused by mutation pressure or the host. Finally, we have mapped the similarity levels of the overall codon usage between the virus and the host to assess the potential of cross-species infection. Thus, this study has provided a novel aspect for better understanding the HEV genetic orientation and the zoonotic nature.
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Affiliation(s)
- Jing Sun
- Geriatrics Department, The Second Hospital of Lanzhou University, Lanzhou University, No. 82 Cuiying Men, Chengguan District, Lanzhou City, Gansu Province 730000, China
| | - Caiqin Ren
- Geriatrics Department, The Second Hospital of Lanzhou University, Lanzhou University, No. 82 Cuiying Men, Chengguan District, Lanzhou City, Gansu Province 730000, China
| | - Ying Huang
- Maxillofacial Surgery Department, The Second Hospital of Lanzhou University, Lanzhou University, No. 82 Cuiying Men, Chengguan District, Lanzhou City, Gansu Province 730000, China
| | - Wenhan Chao
- Geriatrics Department, The Second Hospital of Lanzhou University, Lanzhou University, No. 82 Cuiying Men, Chengguan District, Lanzhou City, Gansu Province 730000, China
| | - Fuqiang Xie
- Maxillofacial Surgery Department, The Second Hospital of Lanzhou University, Lanzhou University, No. 82 Cuiying Men, Chengguan District, Lanzhou City, Gansu Province 730000, China.
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Zhang Q, Zong X, Li D, Lin J, Li L. Performance Evaluation of Different Commercial Serological Kits for Diagnosis of Acute Hepatitis E Viral Infection. Pol J Microbiol 2020; 69:217-222. [PMID: 32548990 PMCID: PMC7324857 DOI: 10.33073/pjm-2020-025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 05/04/2020] [Accepted: 05/09/2020] [Indexed: 12/24/2022] Open
Abstract
Clinical diagnosis of hepatitis E viral (HEV) infection mainly relies on serological assays, and the current status of misdiagnoses regarding HEV infection is uncertain. In this study, patients with acute HEV infection were tested for anti-HEV IgM and IgG, a HEV antigen (Ag), and viral loads (HEV RNA). Serology was performed using four commercial HEV ELISA kits: Wantai, Kehua, Lizhu, and Genelabs IgM and IgG. The HEV RNA was detected using RT-PCR assays. The sensitivities of different kits for anti-HEV IgM ranged from 82.6% to 86%. Each kit for anti-HEV IgM was highly specific (97.8–100%). The sensitivities of all kits to detect anti-HEV IgG with (87.2–91.9%) had a substantial agreement, but the Kehua and Genelabs tests were more specific than the Wantai and Lizhu tests. The Wantai tests for the HEV Ag and HEV RNA were also important for acute HEV infections (Kappa = 0.787). Furthermore, a total of 6.98% of HEV infections were positive for HEV RNA but negative for both the HEV Ag and anti-HEV antibodies of IgM and IgG classes. Our findings demonstrate that the diagnosis of hepatitis E may be missed if only serological assays are used. Thus, a combination of serological and nucleic acid testing provides the optimal sensitivity and specificity to the diagnostic process.
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Affiliation(s)
- Qiang Zhang
- Department of Clinical Laboratory , Branch of Tianjin Third Central Hospital , Tianjin , China
| | - Xiaolong Zong
- Department of Clinical Laboratory , The Second Hospital of Tianjin Medical University , Tianjin , China
| | - Dongming Li
- Department of Clinical Laboratory , Tianjin Third Central Hospital , Tianjin , China
| | - Jing Lin
- Department of Clinical Laboratory , Branch of Tianjin Third Central Hospital , Tianjin , China
| | - Lihua Li
- Department of Clinical Laboratory , Branch of Tianjin Third Central Hospital , Tianjin , China
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26
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Sooryanarain H, Meng XJ. Swine hepatitis E virus: Cross-species infection, pork safety and chronic infection. Virus Res 2020; 284:197985. [PMID: 32333941 DOI: 10.1016/j.virusres.2020.197985] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/11/2020] [Accepted: 04/17/2020] [Indexed: 12/12/2022]
Abstract
Swine hepatitis E virus (swine HEV) belongs to the species Orthohepevirus A within the genus Orthohepevirus in the family Hepeviridae. Four different genotypes of swine HEV within the species Orthohepevirus A have been identified so far from domesticated and wild swine population: genotypes 3 (HEV-3) and 4 (HEV-4) swine HEVs are zoonotic and infect humans, whereas HEV-5 and HEV-6 are only identified from swine. As a zoonotic agent, swine HEV is an emerging public health concern in many industrialized countries. Pigs are natural reservoir for HEV, consumption of raw or undercooked pork is an important route of foodborne HEV transmission. Occupational risks such as direct contact with infected pigs also increase the risk of HEV transmission in humans. Cross-species infection of HEV-3 and HEV-4 have been documented under experimental and natural conditions. Both swine HEV-3 and swine HEV-4 infect non-human primates, the surrogates of man. Swine HEV, predominantly HEV-3, can establish chronic infection in immunocompromised patients especially in solid organ transplant recipients. The zoonotic HEV-3, and to lesser extent HEV-4, have also been shown to cause neurological diseases and kidney injury. In this review, we focus on the epidemiology of swine HEV, host and viral determinants influencing cross-species HEV infection, zoonotic infection and its associated pork safety concern, as well as swine HEV-associated chronic infection and neurological diseases.
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Affiliation(s)
- Harini Sooryanarain
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Xiang-Jin Meng
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.
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27
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Choe S, Song S, Park GN, Shin J, Kim KS, Cha RM, Hyun BH, Park BK, An DJ. Detection of subtypes (3a, 4a and 4d) and high prevalence of hepatitis E virus in Korean wild boar. Vet Microbiol 2019; 240:108531. [PMID: 31902495 DOI: 10.1016/j.vetmic.2019.108531] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/26/2019] [Accepted: 11/26/2019] [Indexed: 11/15/2022]
Abstract
The hepatitis E virus (HEV) is known to have 4 genotypes but only one serotype. Genotype 1 and 2 infect humans only and genotype 3 and 4 infect humans, pigs and other animal species. Pig and wild boar are also known as reservoirs of HEV infection. Of the 2736 wild boars captured from 2011 to 2016 to investigate the HEV prevalence among Korean wild boars, 1041 serum samples were high seropositive (38.1%; 95% CI: 35.5-40.5) for HEV, which were detected using the anti-HEV antibody ELISA and the highest prevalence rate was 40.6% (684/1683) in 2016. Twenty four HEV strains were also identified from 1859 wild boar bloods captured between 2015 and 2016. The phylogenetic tree constructed based on the partial ORF2 gene revealed that the 23 Korean wild boar HEV strains belonged to genotype 4 (4a and 4d) showing the nucleotide sequences identities 83.4-100 %. The one Korean wild boar HEV strain belonged to genotype 3, segregated into subgenotype 3a. This suggested that major circulating in Korean wild boars is genotype 4a whereas genotype 3a and -4d is minor. It is important to the human public health that HEV with wild boar have potential high risk factor for transmission to human due to eating culture of Korean people with undercooked wild boar gallbladder.
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Affiliation(s)
- SeEun Choe
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimchen, Gyeongbuk-do, 39660, South Korea
| | - Sok Song
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimchen, Gyeongbuk-do, 39660, South Korea
| | - Gyu-Nam Park
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimchen, Gyeongbuk-do, 39660, South Korea
| | - Jihye Shin
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimchen, Gyeongbuk-do, 39660, South Korea
| | - Ki-Sun Kim
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimchen, Gyeongbuk-do, 39660, South Korea
| | - Ra Mi Cha
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimchen, Gyeongbuk-do, 39660, South Korea
| | - Bang-Hun Hyun
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimchen, Gyeongbuk-do, 39660, South Korea
| | - Bong-Kyun Park
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimchen, Gyeongbuk-do, 39660, South Korea; College of Veterinary Medicine, Seoul University, Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Dong-Jun An
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimchen, Gyeongbuk-do, 39660, South Korea.
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28
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Sayed IM, Elkhawaga AA, El-Mokhtar MA. In vivo models for studying Hepatitis E virus infection; Updates and applications. Virus Res 2019; 274:197765. [PMID: 31563457 DOI: 10.1016/j.virusres.2019.197765] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/17/2019] [Accepted: 09/20/2019] [Indexed: 02/08/2023]
Abstract
Hepatitis E virus (HEV) is the most common cause of acute viral hepatitis globally. HEV belongs to the Hepeviridae family and at least five genotypes (gt) infect humans. Several animal species are reservoirs for different HEV strains, and they are the source of infection for humans. Some HEV strains are species specific, but other strains could cross species and infect many hosts. The study of HEV infection and pathogenesis was hampered due to the lack of an in vitro and in vivo robust model system. The cell culture system has been established for certain HEV strains, especially gt3 and 4, but gt1 strains replicate poorly in vitro. To date, animal models are the best tool for studying HEV infection. Non-human primates (NHPs) and pigs are the main animal models used for studying HEV infection, but ethical and financial concerns restrict the use of NHPs in research. Therefore, new small animal models have been developed which help more progress in HEV research. In this review, we give updates on the animal models used for studying HEV infection, focusing on the applicability of each model in studying different HEV infections, cross-species infection, virus-host interaction, evaluation of anti-HEV therapies and testing potential HEV vaccines.
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Affiliation(s)
- Ibrahim M Sayed
- Department of Pathology, School of Medicine, University of California, San Diego, La Jolla, California, USA; Medical Microbiology and Immunology Department, Faculty of Medicine, Assiut University, Assiut, Egypt.
| | - Amal A Elkhawaga
- Medical Microbiology and Immunology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mohamed A El-Mokhtar
- Medical Microbiology and Immunology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
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29
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Nakano T, Okano H, Takahashi M, Nagashima S, Shiraki K, Oya Y, Inoue H, Ohmori S, Tsukimoto M, Ishida S, Fujimoto S, Kobayashi M, Yamawaki M, Kumagai M, Ninomiya J, Maegawa T, Kojima Y, Araki J, Hamaoka S, Horiike S, Yoshimura H, Takeuchi K, Itoh K, Akachi S, Uraki S, Yamamoto N, Ogura S, Sugimoto K, Yoshikawa K, Hasegawa H, Iwasa M, Takei Y, Okamoto H. Changing clinical and molecular characteristics of hepatitis E virus infection in Mie Prefecture, Japan: Disappearance of indigenous subtype 3e strains. Hepatol Res 2019; 49:1003-1014. [PMID: 31026368 DOI: 10.1111/hepr.13357] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 04/09/2019] [Accepted: 04/19/2019] [Indexed: 02/08/2023]
Abstract
AIM To evaluate the clinical and molecular characteristics of hepatitis E virus (HEV) infection in Mie Prefecture, Japan, from 2004 through 2018. METHODS The clinical information of hepatitis E cases was collected from 21 medical institutions in Mie Prefecture. The nucleotide sequences of infecting HEV strains were determined for cases with available serum samples. The origins or transmission routes were inferred from phylogenetic analyses of the nucleotide sequences. RESULTS Fifty-three patients were diagnosed with HEV infection. The number of cases increased each year through 2012 and then decreased. Analyses of the clinical characteristics of the cases indicated that even mild cases were detected in the latter 10 years of the study. Nucleotide sequence analyses were undertaken on 38 of the 53 cases. The HEV subtype 3e (HEV-3e) strains identified for 13 cases were closely related to a swine HEV-3e strain that was isolated from the liver of a pig bred in Mie Prefecture. The number of cases infected with the indigenous Mie HEV-3e strains increased until 2012 but have not been reported since 2014. In the latter half of the study, cases involving various HEV strains of different genotypes and subtypes emerged. CONCLUSIONS The disappearance of indigenous Mie HEV-3e strains appeared to be the primary cause for the decrease in hepatitis E cases in Mie Prefecture. The disappearance might have been associated with improved hygienic conditions on pig farms or the closure of contaminated farms. The results suggest that indigenous HEV strains can be eradicated by appropriate management.
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Affiliation(s)
- Tatsunori Nakano
- Department of Internal Medicine, Fujita Health University Nanakuri Memorial Hospital, Mie, Japan
| | - Hiroshi Okano
- Department of Gastroenterology, Suzuka General Hospital, Mie, Japan
| | - Masaharu Takahashi
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Shigeo Nagashima
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Katsuya Shiraki
- Department of Gastroenterology, Mie Prefectural General Medical Center, Mie, Japan
| | - Yumi Oya
- Department of Gastroenterology, Mie Prefectural General Medical Center, Mie, Japan
| | - Hidekazu Inoue
- Department of Gastroenterology, Mie Prefectural General Medical Center, Mie, Japan
| | - Shigeru Ohmori
- Department of Gastroenterology, Kuwana City Medical Center, Mie, Japan
| | - Mone Tsukimoto
- Department of Gastroenterology, Kuwana City Medical Center, Mie, Japan
| | - Satoshi Ishida
- Department of Gastroenterology, Kuwana City Medical Center, Mie, Japan
| | - Shino Fujimoto
- Department of Gastroenterology, Kuwana City Medical Center, Mie, Japan
| | - Makoto Kobayashi
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Mie, Japan
| | - Makoto Yamawaki
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Mie, Japan
| | - Masanari Kumagai
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Mie, Japan
| | - Jun Ninomiya
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Mie, Japan
| | - Tadashi Maegawa
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Mie, Japan
| | - Yuji Kojima
- Department of Hepatology, Ise Red Cross Hospital, Mie, Japan
| | - Jun Araki
- Department of Hepatology, Ise Red Cross Hospital, Mie, Japan
| | - Shima Hamaoka
- Department of Hepatology, Ise Red Cross Hospital, Mie, Japan
| | - Shinichiro Horiike
- Department of Internal Medicine, Suzuka Kaisei Hospital, Suzuka, Mie, Japan
| | | | - Keisuke Takeuchi
- Department of Gastroenterology, Mie Chuo Medical Center, Mie, Japan
| | - Keiichi Itoh
- Department of Gastroenterology, Mie Prefectural Shima Hospital, Mie, Japan
| | - Shigehiro Akachi
- Mie Prefectural Institute of Public Health and Environmental Sciences, Mie, Japan
| | - Satoko Uraki
- Department of Internal Medicine, Sakakibara Onsen Hospital, Mie, Japan.,Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Norihiko Yamamoto
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan.,Department of Hepatology, Tohyama Hospital, Mie, Japan
| | - Suguru Ogura
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Kazushi Sugimoto
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Kyoko Yoshikawa
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Hiroshi Hasegawa
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Motoh Iwasa
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Yoshiyuki Takei
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Hiroaki Okamoto
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
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Quantification and genetic diversity of Hepatitis E virus in wild boar (Sus scrofa) hunted for domestic consumption in Central Italy. Food Microbiol 2019; 82:194-201. [DOI: 10.1016/j.fm.2019.02.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 02/07/2019] [Accepted: 02/11/2019] [Indexed: 12/19/2022]
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Primadharsini PP, Nagashima S, Okamoto H. Genetic Variability and Evolution of Hepatitis E Virus. Viruses 2019; 11:E456. [PMID: 31109076 PMCID: PMC6563261 DOI: 10.3390/v11050456] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/15/2019] [Accepted: 05/16/2019] [Indexed: 12/16/2022] Open
Abstract
Hepatitis E virus (HEV) is a single-stranded positive-sense RNA virus. HEV can cause both acute and chronic hepatitis, with the latter usually occurring in immunocompromised patients. Modes of transmission range from the classic fecal-oral route or zoonotic route, to relatively recently recognized but increasingly common routes, such as via the transfusion of blood products or organ transplantation. Extrahepatic manifestations, such as neurological, kidney and hematological abnormalities, have been documented in some limited cases, typically in patients with immune suppression. HEV has demonstrated extensive genomic diversity and a variety of HEV strains have been identified worldwide from human populations as well as growing numbers of animal species. The genetic variability and constant evolution of HEV contribute to its physiopathogenesis and adaptation to new hosts. This review describes the recent classification of the Hepeviridae family, global genotype distribution, clinical significance of HEV genotype and genomic variability and evolution of HEV.
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Affiliation(s)
- Putu Prathiwi Primadharsini
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi 329-0498, Japan.
| | - Shigeo Nagashima
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi 329-0498, Japan.
| | - Hiroaki Okamoto
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi 329-0498, Japan.
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32
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Yonemitsu K, Minami S, Noguchi K, Kuwata R, Shimoda H, Maeda K. Detection of anti-viral antibodies from meat juice of wild boars. J Vet Med Sci 2018; 81:155-159. [PMID: 30473571 PMCID: PMC6361650 DOI: 10.1292/jvms.18-0576] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Wild boars are a reservoir for many zoonotic pathogens and a good sentinel for surveillance of zoonotic viral infections, but collection of serum samples from wild boars in the field is sometimes difficult and requires special equipment and techniques. In this study, ELISA using meat juices extracted from the heart and diaphragm of wild boars, instead of serum samples, was performed to detect antibodies against zoonotic pathogens, Japanese encephalitis virus and hepatitis E virus. The results of ELISA using meat juice samples were significantly correlated with those using serum samples and meat juice contained one-fifth the antibodies of serum samples. As meat juice is easily collected from wild animals in the field without special equipment and techniques, ELISA using meat juice is a simple and superior method for serological survey of zoonosis among wild animals.
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Affiliation(s)
- Kenzo Yonemitsu
- Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Shohei Minami
- Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Keita Noguchi
- Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Ryusei Kuwata
- Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Hiroshi Shimoda
- Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Ken Maeda
- Laboratory of Veterinary Microbiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
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King NJ, Hewitt J, Perchec-Merien AM. Hiding in Plain Sight? It's Time to Investigate Other Possible Transmission Routes for Hepatitis E Virus (HEV) in Developed Countries. FOOD AND ENVIRONMENTAL VIROLOGY 2018; 10:225-252. [PMID: 29623595 DOI: 10.1007/s12560-018-9342-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Accepted: 03/29/2018] [Indexed: 06/08/2023]
Abstract
Historically in developed countries, reported hepatitis E cases were typically travellers returning from countries where hepatitis E virus (HEV) is endemic, but now there are increasing numbers of non-travel-related ("autochthonous") cases being reported. Data for HEV in New Zealand remain limited and the transmission routes unproven. We critically reviewed the scientific evidence supporting HEV transmission routes in other developed countries to inform how people in New Zealand may be exposed to this virus. A substantial body of indirect evidence shows domesticated pigs are a source of zoonotic human HEV infection, but there is an information bias towards this established reservoir. The increasing range of animals in which HEV has been detected makes it important to consider other possible animal reservoirs of HEV genotypes that can or could infect humans. Foodborne transmission of HEV from swine and deer products has been proven, and a large body of indirect evidence (e.g. food surveys, epidemiological studies and phylogenetic analyses) support pig products as vehicles of HEV infection. Scarce data from other foods suggest we are neglecting other potential sources of foodborne HEV infection. Moreover, other transmission routes are scarcely investigated in developed countries; the role of infected food handlers, person-to-person transmission via the faecal-oral route, and waterborne transmission from recreational contact or drinking untreated or inadequately treated water. People have become symptomatic after receiving transfusions of HEV-contaminated blood, but it is unclear how important this is in the overall hepatitis E disease burden. There is need for broader research efforts to support establishing risk-based controls.
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Affiliation(s)
- Nicola J King
- Institute of Environmental Science and Research, 34 Kenepuru Drive, Kenepuru, Porirua, 5022, New Zealand
| | - Joanne Hewitt
- Institute of Environmental Science and Research, 34 Kenepuru Drive, Kenepuru, Porirua, 5022, New Zealand.
| | - Anne-Marie Perchec-Merien
- New Zealand Ministry for Primary Industries, Pastoral House, 25 The Terrace, Wellington, New Zealand
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Kantala T, Maunula L. Hepatitis E virus: zoonotic and foodborne transmission in developed countries. Future Virol 2018. [DOI: 10.2217/fvl-2018-0062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Hepatitis E virus (HEV), together with hepatitis A virus, transmits via the fecal–oral route. The number of domestic hepatitis E cases among Europeans has grown alarmingly during the past 5 years. Surveillance studies suggest that the number of foodborne HEV infections is increasing most rapidly. Zoonotic HEV genotype HEV-3 is prevalent among pigs and wild boars in Europe and many developed countries, whereas zoonotic genotype HEV-4 is more common in pigs in some Asian countries. This review presents the most recent data about possible foodborne transmission of HEV via pigs and other production animals and about the presence of HEV in high-risk foods, such as ready-to-eat meat products. Possible solutions about how to tackle this problem are discussed here.
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Affiliation(s)
- Tuija Kantala
- Department of Food Hygiene & Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, FI-00014, Helsinki, Finland
- Finnish Food Safety Authority Evira, Mustialankatu 3, FI-00790 Helsinki, Finland
| | - Leena Maunula
- Department of Food Hygiene & Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, FI-00014, Helsinki, Finland
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Ingesting Self-Grown Produce and Seropositivity for Hepatitis E in the United States. Gastroenterol Res Pract 2018; 2018:7980413. [PMID: 30116267 PMCID: PMC6079431 DOI: 10.1155/2018/7980413] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 06/25/2018] [Indexed: 02/07/2023] Open
Abstract
Background Hepatitis E virus (HEV) is a major cause of hepatitis in developing and industrialized countries worldwide. The modes of HEV transmission in industrialized countries, including the United States, remain largely unknown. This study is aimed at evaluating the association between HEV seropositivity and consumption of self-grown foods in the United States. Methods Cross-sectional data was extracted from the 2009–2012 National Health and Nutrition Examination Survey (NHANES). Data from the dietary interview and the serum HEV IgG and IgM enzyme immunoassay test results were linked and examined. Univariate and multivariable logistic regression models were used to evaluate the significance and effect size of an association between self-grown food consumption and hepatitis E seropositivity. Results The estimated HEV seroprevalence in the civilian, noninstitutionalized US population was 6.6% in 2009–2012, which corresponds to an estimated hepatitis E national seroprevalence of 17,196,457 people. Overall, 10.9% of participants who ingested self-grown foods had positive HEV antibodies versus 6.1% of participants who did not consume self-grown foods (P < 0.001; odds ratio (OR) 1.87; 95% CI 1.41–2.48). In the age-stratified multivariable analysis, the correlation between ingesting self-grown foods and HEV seropositivity was significant for participants 40–59 years old, but not overall, or for those < 40 years or ≥60 years. Conclusions Ingesting self-grown food, or simply the process of gardening/farming, may be a source of zoonotic HEV transmission.
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Lu W, Wen J. The divergence of epidemiological, antigenic and immunogenic characteristics of hepatitis E virus of different genotypes. Future Virol 2018. [DOI: 10.2217/fvl-2017-0094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hepatitis E virus (HEV) is an enterically transmitted pathogen that causes hepatitis E (HE). HEVs infecting mammals have been classified into four genotypes. Numerously diverse behaviors have been found among HEV genotypes; the first two genotypes are endemic in developing countries and only infect humans, whereas genotypes 3 and 4 infect other mammalian species as well. It is still unclear why only HEV genotypes 3 and 4 can infect across species. This article comprehensively: reviews the divergence of epidemiological and immunogenic characteristics of HEV infection derived from different genotypes; provides the current knowledge on the antigenic and immunogenic differences between different HEV genotypes; and will give useful information on serological diagnosis development and vaccines preparation.
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Affiliation(s)
- Weizhuo Lu
- Medical Branch, Hefei Technology College, Hefei, China
| | - Jiyue Wen
- Department of Pharmacology, Anhui Medical University, Hefei, China
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Serological and virological survey of hepatitis E virus (HEV) in animal reservoirs from Uruguay reveals elevated prevalences and a very close phylogenetic relationship between swine and human strains. Vet Microbiol 2018; 213:21-27. [DOI: 10.1016/j.vetmic.2017.11.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/12/2017] [Accepted: 11/13/2017] [Indexed: 02/07/2023]
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Nan Y, Wu C, Zhao Q, Zhou EM. Zoonotic Hepatitis E Virus: An Ignored Risk for Public Health. Front Microbiol 2017; 8:2396. [PMID: 29255453 PMCID: PMC5723051 DOI: 10.3389/fmicb.2017.02396] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 11/20/2017] [Indexed: 12/27/2022] Open
Abstract
Hepatitis E virus (HEV) is a quasi-enveloped, single-stranded positive-sense RNA virus. HEV belongs to the family Hepeviridae, a family comprised of highly diverse viruses originating from various species. Since confirmation of HEV's zoonosis, HEV-induced hepatitis has been a public health concern both for developing and developed countries. Meanwhile, the demonstration of a broad host range for zoonotic HEV suggests the existence of a variety of transmission routes that could lead to human infection. Moreover, anti-HEV antibody serosurveillance worldwide demonstrates a higher than expected HEV prevalence rate that conflicts with the rarity and sporadic nature of reported acute hepatitis E cases. In recent years, chronic HEV infection, HEV-related acute hepatic failure, and extrahepatic manifestations caused by HEV infection have been frequently reported. These observations suggest a significant underestimation of the number and complexity of transmission routes previously predicted to cause HEV-related disease, with special emphasis on zoonotic HEV as a public health concern. Significant research has revealed details regarding the virology and infectivity of zoonotic HEV in both humans and animals. In this review, the discovery of HEV zoonosis, recent progress in our understanding of the zoonotic HEV host range, and classification of diverse HEV or HEV-like isolates from various hosts are reviewed in a historic context. Ultimately, this review focuses on current understanding of viral pathogenesis and cross-species transmission of zoonotic HEV. Moreover, host factors and viral determinants influencing HEV host tropism are discussed to provide new insights into HEV transmission and prevalence mechanisms.
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Affiliation(s)
- Yuchen Nan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Xianyang, China
- Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Xianyang, China
| | - Chunyan Wu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Xianyang, China
- Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Xianyang, China
| | - Qin Zhao
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Xianyang, China
- Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Xianyang, China
| | - En-Min Zhou
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Xianyang, China
- Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Xianyang, China
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Pavio N, Doceul V, Bagdassarian E, Johne R. Recent knowledge on hepatitis E virus in Suidae reservoirs and transmission routes to human. Vet Res 2017; 48:78. [PMID: 29157309 PMCID: PMC5696788 DOI: 10.1186/s13567-017-0483-9] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 10/16/2017] [Indexed: 12/22/2022] Open
Abstract
Hepatitis E virus (HEV) causes self-limiting acute hepatitis in humans that can eventually result in acute liver failures or progress to chronic infections. While in tropical and sub-tropical areas, HEV infections are associated with important waterborne epidemics, in Northern countries, HEV infections are autochthonous with a zoonotic origin. In the past decade, it has become clear that certain HEV genotypes are zoonotic and that swine, and more generally Suidae, are the main reservoir. Zoonotic transmissions of the virus may occur via direct contact with infected pigs, wild boars or consumption of contaminated meat. This review describes the current knowledge on domestic and wild Suidae as reservoirs of HEV and the evidence of the different routes of HEV transmission between these animals and humans.
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Affiliation(s)
- Nicole Pavio
- Animal Health Laboratory, UMR 1161 Virology, ANSES, Maisons-Alfort, France
- UMR 1161 Virology, INRA, Maisons-Alfort, France
- UMR 1161 Virology, PRES University Paris 12, National Veterinary School, Maisons-Alfort, France
| | - Virginie Doceul
- Animal Health Laboratory, UMR 1161 Virology, ANSES, Maisons-Alfort, France
- UMR 1161 Virology, INRA, Maisons-Alfort, France
- UMR 1161 Virology, PRES University Paris 12, National Veterinary School, Maisons-Alfort, France
| | - Eugénie Bagdassarian
- Animal Health Laboratory, UMR 1161 Virology, ANSES, Maisons-Alfort, France
- UMR 1161 Virology, INRA, Maisons-Alfort, France
- UMR 1161 Virology, PRES University Paris 12, National Veterinary School, Maisons-Alfort, France
| | - Reimar Johne
- German Federal Institute for Risk Assessment, Berlin, Germany
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40
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Al-Sadeq DW, Majdalawieh AF, Nasrallah GK. Seroprevalence and incidence of hepatitis E virus among blood donors: A review. Rev Med Virol 2017; 27:e1937. [PMID: 28876496 DOI: 10.1002/rmv.1937] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/16/2017] [Accepted: 07/18/2017] [Indexed: 12/19/2022]
Abstract
Hepatitis E virus (HEV) is an RNA virus with 4 main genotypes. HEV-1 and HEV-2 infect solely humans, while HEV-3 and HEV-4 infect humans and various animals such as pigs, deer, and rabbits. HEV-5 and HEV-6 infect mainly wild boar. Recently, new genotypes, known as HEV-7 and HEV-8, were found to infect camels and humans. HEV is globally distributed into different epidemiological patterns based on socioeconomic factors and ecology. Although HEV is mainly transmitted through the fecal-oral route, it was also recognized as a transfusion-transmitted virus. Transmission through blood donation was documented worldwide with rising annual observations, accounting for more than 2.5% of all transmissions. HEV infection is usually asymptomatic or subclinical in immunocompetent individuals, so it remains questionable whether there is an urgent need to screen for HEV prior to blood transfusion. Moreover, recent studies conducted in the Middle East and North Africa (MENA) region indicate that HEV is highly endemic. Here, we provide a review on HEV epidemiology, transmission, and laboratory diagnosis, giving special emphasis to the newly discovered genotypes, HEV-7 and HEV-8. Furthermore, we underscore the findings of recent HEV seroprevalence and viremia studies among blood donors worldwide. We also shed light on similar studies performed among blood donors in the MENA region.
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Affiliation(s)
- Duaa W Al-Sadeq
- Department of Biomedical Science, College of Health Sciences, Qatar University, Doha, Qatar
| | - Amin F Majdalawieh
- Department of Biology, Chemistry, and Environmental Sciences, College of Arts and Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Gheyath K Nasrallah
- Department of Biomedical Science, College of Health Sciences, Qatar University, Doha, Qatar
- Biomedical Research Center, Qatar University, Doha, Qatar
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41
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Full-length genome of a novel genotype 3 hepatitis E virus strain obtained from domestic pigs in Japan. Virus Res 2017; 240:147-153. [DOI: 10.1016/j.virusres.2017.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 08/03/2017] [Accepted: 08/03/2017] [Indexed: 12/27/2022]
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Ricci A, Allende A, Bolton D, Chemaly M, Davies R, Fernandez Escamez PS, Herman L, Koutsoumanis K, Lindqvist R, Nørrung B, Robertson L, Ru G, Sanaa M, Simmons M, Skandamis P, Snary E, Speybroeck N, Ter Kuile B, Threlfall J, Wahlström H, Di Bartolo I, Johne R, Pavio N, Rutjes S, van der Poel W, Vasickova P, Hempen M, Messens W, Rizzi V, Latronico F, Girones R. Public health risks associated with hepatitis E virus (HEV) as a food-borne pathogen. EFSA J 2017; 15:e04886. [PMID: 32625551 PMCID: PMC7010180 DOI: 10.2903/j.efsa.2017.4886] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Hepatitis E virus (HEV) is an important infection in humans in EU/EEA countries, and over the last 10 years more than 21,000 acute clinical cases with 28 fatalities have been notified with an overall 10-fold increase in reported HEV cases; the majority (80%) of cases were reported from France, Germany and the UK. However, as infection in humans is not notifiable in all Member States, and surveillance differs between countries, the number of reported cases is not comparable and the true number of cases would probably be higher. Food-borne transmission of HEV appears to be a major route in Europe; pigs and wild boars are the main source of HEV. Outbreaks and sporadic cases have been identified in immune-competent persons as well as in recognised risk groups such as those with pre-existing liver damage, immunosuppressive illness or receiving immunosuppressive treatments. The opinion reviews current methods for the detection, identification, characterisation and tracing of HEV in food-producing animals and foods, reviews literature on HEV reservoirs and food-borne pathways, examines information on the epidemiology of HEV and its occurrence and persistence in foods, and investigates possible control measures along the food chain. Presently, the only efficient control option for HEV infection from consumption of meat, liver and products derived from animal reservoirs is sufficient heat treatment. The development of validated quantitative and qualitative detection methods, including infectivity assays and consensus molecular typing protocols, is required for the development of quantitative microbial risk assessments and efficient control measures. More research on the epidemiology and control of HEV in pig herds is required in order to minimise the proportion of pigs that remain viraemic or carry high levels of virus in intestinal contents at the time of slaughter. Consumption of raw pig, wild boar and deer meat products should be avoided.
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Hepatitis E Virus Genotypes and Evolution: Emergence of Camel Hepatitis E Variants. Int J Mol Sci 2017; 18:ijms18040869. [PMID: 28425927 PMCID: PMC5412450 DOI: 10.3390/ijms18040869] [Citation(s) in RCA: 150] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 04/11/2017] [Accepted: 04/18/2017] [Indexed: 12/18/2022] Open
Abstract
Hepatitis E virus (HEV) is a major cause of viral hepatitis globally. Zoonotic HEV is an important cause of chronic hepatitis in immunocompromised patients. The rapid identification of novel HEV variants and accumulating sequence information has prompted significant changes in taxonomy of the family Hepeviridae. This family includes two genera: Orthohepevirus, which infects terrestrial vertebrates, and Piscihepevirus, which infects fish. Within Orthohepevirus, there are four species, A–D, with widely differing host range. Orthohepevirus A contains the HEV variants infecting humans and its significance continues to expand with new clinical information. We now recognize eight genotypes within Orthohepevirus A: HEV1 and HEV2, restricted to humans; HEV3, which circulates among humans, swine, rabbits, deer and mongooses; HEV4, which circulates between humans and swine; HEV5 and HEV6, which are found in wild boars; and HEV7 and HEV8, which were recently identified in dromedary and Bactrian camels, respectively. HEV7 is an example of a novel genotype that was found to have significance to human health shortly after discovery. In this review, we summarize recent developments in HEV molecular taxonomy, epidemiology and evolution and describe the discovery of novel camel HEV genotypes as an illustrative example of the changes in this field.
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Yamazaki Y, Naganuma A, Arai Y, Takeuchi S, Kobayashi T, Takakusagi S, Hatanaka T, Hoshino T, Namikawa M, Hashizume H, Takizawa D, Ohyama T, Suzuki H, Horiguchi N, Takagi H, Sato K, Kakizaki S, Kusano M, Nagashima S, Takahashi M, Okamoto H, Yamada M. Clinical and virological features of acute hepatitis E in Gunma prefecture, Japan between 2004 and 2015. Hepatol Res 2017; 47:435-445. [PMID: 27322051 DOI: 10.1111/hepr.12765] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 06/13/2016] [Accepted: 06/14/2016] [Indexed: 12/13/2022]
Abstract
AIM To evaluate the clinical and virological features of acute hepatitis E (AH-E) in Gunma prefecture and focus on the hepatitis E virus (HEV) infection in immunocompromised patients. METHODS A total of 30 patients with AH-E diagnosed at our Gunma University Hospital, and located in 3-39-15 Showa-machi, Maebashi, Gunma 371-8511 Japan, and its affiliated hospitals from 2004 to 2015, were studied. We evaluated the detailed medical histories, laboratory examinations and virological features of these participants. RESULTS Of the 30 patients, 21 patients were men, with a median age of 61 years. Three of these patients had a history of recent oversea travel. A total of 14 patients had eaten raw or undercooked meat/viscera from animals, and two patients had contracted transfusion-transmitted AH-E. Eight patients were immunocompromised, including those with hematological disease, cancer receiving systemic chemotherapy and kidney transplant or connective tissue disease undergoing immunosuppressive medications. The alanine aminotransferase and total bilirubin levels were more significantly reduced in these immunocompromised patients than in the non-immunocompromised patients. Severe thrombocytopenia, an extra-hepatic manifestation of AH-E, occurred in one case. Among the 22 HEV strains whose subgenotype was determined, two were imported strains (1a and 1f), and 11 strains formed four distinct phylogenetic clusters within subgenotype 3b. The remaining nine strains differed from each other by 9.8-22.4%, and were classified into four subgenotypes (3a, 3b, 3e and 3f). CONCLUSION Markedly divergent HEV strains (3a, 3b, 3e and 3f) were found to circulate in Gunma. Although immunosuppression appears to play a crucial role in establishing chronic sequels, AH-E in eight immunocompromised patients, including transfusion-transmitted HEV infection in two patients, did not become chronic.
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Affiliation(s)
- Yuichi Yamazaki
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Atsushi Naganuma
- Department of Gastroenterology, National Hospital Organization Takasaki General Medical Center, Takasaki, Japan.,Department of Internal Medicine, Kiryu Kosei General Hospital Kiryu, Japan
| | - Yosuke Arai
- Department of Internal Medicine, Kiryu Kosei General Hospital Kiryu, Japan
| | - Suguru Takeuchi
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan.,Department of Internal Medicine, Isesaki Municipal Hospital, Isesaki, Japan
| | - Takeshi Kobayashi
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Satoshi Takakusagi
- Department of Gastroenterology and Hepatology, Kusunoki Hospital Fujioka, Japan
| | - Takeshi Hatanaka
- Department of Internal Medicine, Isesaki Municipal Hospital, Isesaki, Japan
| | - Takashi Hoshino
- Department of Gastroenterology, National Hospital Organization Takasaki General Medical Center, Takasaki, Japan
| | - Masashi Namikawa
- Department of Internal Medicine, Kiryu Kosei General Hospital Kiryu, Japan
| | - Hiroaki Hashizume
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Daichi Takizawa
- Department of Internal Medicine, Isesaki Municipal Hospital, Isesaki, Japan
| | - Tatsuya Ohyama
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hideyuki Suzuki
- Department of Internal Medicine, Haramachi Red Cross Hospital, Higashiagatsuma, Japan
| | - Norio Horiguchi
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hitoshi Takagi
- Department of Gastroenterology, National Hospital Organization Takasaki General Medical Center, Takasaki, Japan.,Department of Gastroenterology and Hepatology, Kusunoki Hospital Fujioka, Japan
| | - Ken Sato
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan.,Department of Internal Medicine, Heisei Hidaka Clinic, Takasaki, Japan
| | - Satoru Kakizaki
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Motoyasu Kusano
- Department of Endoscopy and Endoscopic Surgery, Gunma University Hospital
| | - Shigeo Nagashima
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Shimotsuke, Japan
| | - Masaharu Takahashi
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Shimotsuke, Japan
| | - Hiroaki Okamoto
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Shimotsuke, Japan
| | - Masanobu Yamada
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
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Adelabu OA, Chuks Iweriebor B, Nwodo UU, Obi LC, Okoh AI. Incidence and Molecular Characterization of Hepatitis E Virus from Swine in Eastern Cape, South Africa. Adv Virol 2017; 2017:1073253. [PMID: 28191016 PMCID: PMC5278201 DOI: 10.1155/2017/1073253] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 12/22/2016] [Indexed: 12/14/2022] Open
Abstract
Hepatitis E virus-mediated infection is a serious public health concern in economically developing nations of the world. Globally, four major genotypes of HEV have been documented. Hepatitis E has been suggested to be zoonotic owing to the increase of evidence through various studies. Thus far, this paper reports on prevalence of hepatitis E virus among swine herd in selected communal and commercial farms in the Eastern Cape Province of South Africa. A total of 160 faecal samples were collected from swine herds in Amathole and Chris Hani District Municipalities of Eastern Cape Province for the presence of HEV. Of the 160 faecal samples screened, only seven were positive (4.4%) for HEV. The nucleotide sequences analyses revealed the isolates as sharing 82% to 99% identities with other strains (KX896664, KX896665, KX896666, KX896667, KX896668, KX896669, and KX896670) from different regions of the world. We conclude that HEV is present among swine in the Eastern Cape Province, albeit in low incidence, and this does have public health implications. There is a need for maintenance of high hygienic standards in order to prevent human infections through swine faecal materials and appropriate cooking of pork is highly advised.
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Affiliation(s)
- Olusesan Adeyemi Adelabu
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Private Bag X1314, Alice, Eastern Cape Province 5700, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314, Alice, Eastern Cape Province 5700, South Africa
| | - Benson Chuks Iweriebor
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Private Bag X1314, Alice, Eastern Cape Province 5700, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314, Alice, Eastern Cape Province 5700, South Africa
| | - U. U. Nwodo
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Private Bag X1314, Alice, Eastern Cape Province 5700, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314, Alice, Eastern Cape Province 5700, South Africa
| | - Larry Chikwelu Obi
- Academic and Research Division, University of Fort Hare, Private Bag X1314, Alice, Eastern Cape Province, South Africa
| | - Anthony Ifeanyi Okoh
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Private Bag X1314, Alice, Eastern Cape Province 5700, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314, Alice, Eastern Cape Province 5700, South Africa
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Geng Y, Wang Y. Transmission of Hepatitis E Virus. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 948:89-112. [DOI: 10.1007/978-94-024-0942-0_6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Mirazo S, Mir D, Bello G, Ramos N, Musto H, Arbiza J. New insights into the hepatitis E virus genotype 3 phylodynamics and evolutionary history. INFECTION GENETICS AND EVOLUTION 2016; 43:267-73. [PMID: 27264728 DOI: 10.1016/j.meegid.2016.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 05/19/2016] [Accepted: 06/01/2016] [Indexed: 12/27/2022]
Abstract
Hepatitis E virus (HEV) is an emergent hepatotropic virus endemic mainly in Asia and other developing areas. However, in the last decade it has been increasingly reported in high-income countries. Human infecting HEV strains are currently classified into four genotypes (1-4). Genotype 3 (HEV-3) is the prevalent virus genotype and the mostly associated with autochthonous and sporadic cases of HEV in developed areas. The evolutionary history of HEV worldwide remains largely unknown. In this study we reconstructed the spatiotemporal and population dynamics of HEV-3 at global scale, but with particular emphasis in South America, where case reports have increased dramatically in the last years. To achieve this, we applied a Bayesian coalescent-based approach to a comprehensive data set comprising 97 GenBank HEV-3 sequences for which the location and sampling date was documented. Our phylogenetic analyses suggest that the worldwide genetic diversity of HEV-3 can be grouped into two main Clades (I and II) with a Ƭmrca dated in approximately 320years ago (95% HPD: 420-236years) and that a unique independent introduction of HEV-3 seems to have occurred in Uruguay, where most of the human HEV cases in South America have been described. The phylodynamic inference indicates that the population size of this virus suffered substantial temporal variations after the second half of the 20th century. In this sense and conversely to what is postulated to date, we suggest that the worldwide effective population size of HEV-3 is not decreasing and that frequently sources of error in its estimates stem from assumptions that the analyzed sequences are derived from a single panmictic population. Novel insights on the global population dynamics of HEV are given. Additionally, this work constitutes an attempt to further describe in a Bayesian coalescent framework, the phylodynamics and evolutionary history of HEV-3 in the South American region.
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Affiliation(s)
- Santiago Mirazo
- Sección Virología, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay
| | - Daiana Mir
- Laboratorio de AIDS & Imunologia Molecular, Instituto Oswaldo Cruz. Av. Brasil 4365, 21045900 Rio de Janeiro, Brazil
| | - Gonzalo Bello
- Laboratorio de AIDS & Imunologia Molecular, Instituto Oswaldo Cruz. Av. Brasil 4365, 21045900 Rio de Janeiro, Brazil
| | - Natalia Ramos
- Sección Virología, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay
| | - Héctor Musto
- Laboratorio de Organización y Evolución del Genoma, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400. Montevideo, Uruguay
| | - Juan Arbiza
- Sección Virología, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay.
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Žele D, Barry AF, Hakze-van der Honing RW, Vengušt G, van der Poel WHM. Prevalence of Anti-Hepatitis E Virus Antibodies and First Detection of Hepatitis E Virus in Wild Boar in Slovenia. Vector Borne Zoonotic Dis 2016; 16:71-4. [PMID: 26757050 DOI: 10.1089/vbz.2015.1819] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Hepatitis E is an emerging zoonotic disease caused by hepatitis E virus (HEV). In this study, we investigated HEV presence in a wild boar (Sus scrofa) population of Slovenia. A total of 288 wild boar serum samples were collected throughout the country, and HEV infection was investigated by serology, using enzyme-linked immunosorbent assay (ELISA) and by HEV RNA detection using a real-time PCR assay. Antibodies against HEV were detected in 30.2% (87/288) of animals tested, whereas HEV RNA was detected in only one sample. This is the first evidence of HEV presence in the wild boar population in Slovenia, and these results suggest that these animals are part of the HEV epidemiological cycle in the country.
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Affiliation(s)
- Diana Žele
- 1 Institute for Breeding and Health Care of Wild Animals, Fishes and Bees, Veterinary Faculty University of Ljubljana , Ljubljana, Slovenia
| | - Aline F Barry
- 2 Central Veterinary Institute of Wageningen University and Research Centre , Lelystad, the Netherlands
| | | | - Gorazd Vengušt
- 1 Institute for Breeding and Health Care of Wild Animals, Fishes and Bees, Veterinary Faculty University of Ljubljana , Ljubljana, Slovenia
| | - Wim H M van der Poel
- 2 Central Veterinary Institute of Wageningen University and Research Centre , Lelystad, the Netherlands
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Miyazaki S, Noda H, Morita T, Kai Y, Osako A, Kobayashi T, Nagashima S, Takahashi M, Mizuo H, Okamoto H. A case of acute hepatitis E who was suspected to have contracted hepatitis E virus infection via consumption of dried gall bladders from wild boars. ACTA ACUST UNITED AC 2016. [DOI: 10.2957/kanzo.57.606] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Hiroyuki Noda
- Department of Gastroenterology, Tottori-Seikyo Hospital
| | - Terumi Morita
- Department of Gastroenterology, Tottori-Seikyo Hospital
| | - Yuzuru Kai
- Department of Gastroenterology, Tottori-Seikyo Hospital
| | - Ayumi Osako
- Department of Gastroenterology, Tottori-Seikyo Hospital
| | - Tominari Kobayashi
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine
| | - Shigeo Nagashima
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine
| | - Masaharu Takahashi
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine
| | - Hitoshi Mizuo
- Department of Internal Medicine, Kin-ikyo Chuo Hospital
| | - Hiroaki Okamoto
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine
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