Cited by 159Hepatitis Viruses Studies and EpidemiologyAnimal Virus Infections StudiesHepatitis B Virus Studies

Seroprevalence Study in Forestry Workers from Eastern Germany Using Novel Genotype 3-and Rat Hepatitis E Virus-Specific Immunoglobulin G ELISAs

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Dremsek, Paul, Wenzel, Jürgen J., Johne, Reimar, Ziller, Mario, Hofmann, Jörg, Groschup, Martin H., Werdermann, Sandra, Mohn, Ulrich +5 more·2012·Medical Microbiology and Immunology

Abstract

Hepatitis E virus (HEV) is the causative agent of an acute self-limiting hepatitis in humans. In industrialized countries, autochthonous cases are linked to zoonotic transmission from domestic pigs, wild boar and red deer. The main route of human infection presumably is consumption of contaminated meat. Farmers, slaughterers and veterinarians are expected to be risk groups as they work close to potentially infected animals. In this study, we tested four Escherichia coli-expressed segments of the capsid protein (CP) of a German wild boar-derived HEV genotype 3 strain for their diagnostic value in an indirect immunoglobulin G (IgG) ELISA. In an initial validation experiment, a carboxy-terminal CP segment spanning amino acid (aa) residues 326-608 outperformed the other segments harbouring aa residues 112-608, 326-660 and 112-335. Based on this segment, an indirect ELISA for detection of anti-HEV IgG antibodies in human sera was established and validated using a commercial line immunoassay as reference assay. A total of 563 sera from forestry workers of all forestry offices of Brandenburg, eastern Germany and 301 sera of blood donors from eastern Germany were surveyed using these assays. The commercial test revealed seroprevalence rates of 11% for blood donors and 18% for forestry workers. These rates are in line with data obtained by the in-house test (12 and 21%). Hence, the in-house test performed strikingly similar to the commercial test (sensitivity 0.9318, specificity 0.9542). An initial screening of forestry worker and blood donor sera with a corresponding CP segment of the recently discovered Norway rat-associated HEV revealed several strong positive sera exclusively in the forestry worker panel. Future investigations have to prove the performance of this novel IgG ELISA in large-scale seroepidemiological studies. In addition, the observed elevated seroprevalence in a forestry worker group has to be confirmed by studies on groups of forestry workers from other regions. The epidemiological role of ratHEV in human disease should be assessed in a large-scale study of risk and non-risk groups.

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  • Confirmed zoonotic cases of hepatitis E include transmission to humans from domestic pigs, cats, and wild rodents.

    “Confirmed zoonotic cases include transmission to humans from domestic pigs, cats, and wild rodents (Meng 2010; Dremsek et al. 2012).”

    From Red fox viromes in urban and rural landscapes (2020) · cites this paper as Dremsek et al. 2012

    The paper’s summary links human hepatitis E cases to zoonotic transmission from domestic pigs, supporting that part of the claim. It does not mention cats as a source, and its rat-HEV findings are preliminary: it says the role of rat HEV in human disease still needs assessment, not that rodent-to-human transmission is confirmed. The indexed passages have no page labels. (LLM, conf=0.90)

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Authors
Dremsek, P., Wenzel, J. J., Johne, R., Ziller, M., Hofmann, J., Groschup, M. H., Werdermann, S., Mohn, U., Dorn, S., Motz, M., Mertens, M., Jilg, W., & Ulrich, R. G.
Affiliations
  • Friedrich-Loeffler-Institut (DE)
  • Institute of Medical Microbiology and Hygiene (DE)
  • German Federal Institute for Risk Assessment (BfR) (DE)
  • Charité – Universitätsmedizin Berlin (DE)
Corresponding author
Ulrich, Rainer G.
Venue
Medical Microbiology and Immunology
Published
2011-12-18
Volume
201
Issue
2
Pages
189-200
ISSN
  • 0044-3077 (ISSN-L)
  • 0300-8584
  • 1432-1831
OpenAlex
W2131020874
Cited by
159
References
67
Citations by year
2026: 2 · 2025: 8 · 2024: 11 · 2023: 15 · 2022: 13 · 2021: 11 · 2020: 15 · 2019: 10 · 2018: 9 · 2017: 16 · 2016: 11 · 2015: 13 · 2014: 10 · 2013: 8 · 2012: 7
FWCI
5.08
Type
journal article
Language
en
Open access
Locations
  • Medical Microbiology and Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • University of Regensburg Publication Server (University of Regensburg) (acceptedVersion)
  • OpenAgrar (submittedVersion)
  • University of Regensburg Publication Server (University of Regensburg)
Funders
Bundesministerium für Verbraucherschutz, Ernährung und Landwirtschaft
Topics
  • Health Sciences › Medicine › Hepatology › Hepatitis Viruses Studies and Epidemiology
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Virus Infections Studies
  • Health Sciences › Medicine › Epidemiology › Hepatitis B Virus Studies
Keywords
hepatitis E virus, genotype 3, seroprevalence, forestry workers, wild boar, zoonotic transmission, capsid protein, indirect ELISA, IgG, rat hepatitis E virus, blood donors, diagnostic test validation, occupational exposure
MeSH terms
Agriculture, Animals, Enzyme-Linked Immunosorbent Assay, Female, Genotype, Germany, Hepatitis Antibodies, Humans, Immunoglobulin G, Male, Sensitivity and Specificity, Seroepidemiologic Studies, Occupational Exposure, Forestry, Hepatitis E, Hepatitis E virus, Clinical Laboratory Techniques, Sus scrofa, Rats

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