Cited by 57Animal Disease Management and EpidemiologyAnimal Virus Infections StudiesViral Infections and Immunology Research

Transmission and pathogenicity of encephalomyocarditis virus (EMCV) among rats

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Spyrou, Vassiliki, Maurice, Huibert, CharalambosBillinis, Papanastassopoulou, Maria, Psalla, Dimitra, Nielen, Mirjam, Koenen, Frank, Papadopoulos, Orestis·2004·Veterinary Research

Abstract

Due to the probable role played by rodents as a reservoir for the transmission of the EMC virus to pigs, the experiment reported here was performed in order to assess the transmission rate of EMCV within a rat population. Twenty-five eight-week-old Wistar rats housed in individual plastic cages were experimentally infected either with a Greek myocardial EMCV strain (5 rats with a 0.2 x 10(6) TCID50 dose per rat and 10 rats with a 0.5 x 10(4.5) TCID50 dose per rat, oronasally) or a Belgian myocardial EMCV strain (10 rats with a 0.5 x 10(4.5) TCID50 dose per rat, oronasally). Two to five days later, each inoculated rat was moved to a new clean cage and coupled with a contact rat to compare the pathogenicity of the two strains and to estimate the basic reproduction ratio R0, indicating the level of EMCV transmission. During the experiments, faecal virus excretion was measured as well as the serological response against EMCV. After euthanasia, virus isolation was attempted from different rat tissues. Neither strains produced mortality, nor clinical signs and only low titres of neutralising antibodies were found. All contact rats, however, were infected and the virus was isolated from their faeces and from various tissues. Both 10-pair experiments revealed a point estimate for the R0 of infinity (95%-CI for both the Greek and Belgian EMCV strains = 4.48 - infinity), as did the 5-pair experiment with a higher dose of the Greek strain (95%-CI = 1.83 - infinity). Combining the results from the two 10-pair experiments resulted in an estimate for R0 of infinity (95%-CI: 9.87 - infinity). These results indicate that the EMC virus can spread very easily within a rat population by horizontal rat-to-rat transmission (R0 >> 1).

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Research works printed but not linked: 3

  1. Acland H.M., Encephalomyocarditis virus, in: Pensaert M.B. (Ed.), Virus Infections of Porcines, Elsevier Science Publishers, Amsterdam, 1989, pp. 259-264.
  2. King A.M.Q., Brown F., Christian P., Hovi T., Hyypiä T., Knowles N.J., Lemon S.M., Minor P.D., Palmenberg A.C., Skern T., Stanway G., Picornaviridae, in: Van Regenmortel M.H.V., Fauquet C.M., Bishop D.H.L., Calisher C.H., Carsten E.B., Estes M.K., Lemon S.M., Maniloff J., Mayo M.A., McGeoch D.J., Pringle C.R., Wickner R.B. (Eds.), Virus Tax- onomy. Seventh Report of the International Committee for the Taxonomy of Viruses, Academic Press, New York, San Diego, 2000, pp. 657-673.
  3. Koenen F., Nowotny N., Brocchi E., Cruciere C., Papadopoulos O., Nielen M., Knowles N., Loukaidis F., FAIR6 PROGRAMME CT98- 4146; Molecular characterization and epide- miology of EMCV: a model for emerging diseases, in: Koenen F. (Ed.), First consoli- dated year report, 2000, p. 104.

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Authors
Spyrou, V., Maurice, H., CharalambosBillinis, Papanastassopoulou, M., Psalla, D., Nielen, M., Koenen, F., & Papadopoulos, O.
Affiliations
  • Aristotle University of Thessaloniki (GR)
  • Wageningen University & Research (NL)
  • University of Thessaly (GR)
  • Utrecht University (NL)
  • Veterinary and Agrochemical Research Centre (BE)
Venue
Veterinary Research
Publisher
EDP Sciences
Published
2004-01
Volume
35
Issue
1
Pages
113-122
ISSN
  • 0928-4249 (ISSN-L)
  • 1297-9716
OpenAlex
W2102099925
Cited by
56
References
24
Citations by year
2026: 2 · 2025: 2 · 2024: 3 · 2023: 2 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 4 · 2018: 2 · 2017: 2 · 2016: 4 · 2015: 1 · 2014: 2 · 2013: 3 · 2012: 5
FWCI
6.50
Type
journal article
Language
en
Open access
Locations
  • Veterinary Research (publishedVersion)
  • PubMed (publishedVersion)
  • Socio-Environmental Systems Modeling (acceptedVersion)
  • HAL (submittedVersion, other-oa)
  • Springer Link (Chiba Institute of Technology) (submittedVersion)
  • University of Thessaly Institutional Repository (University of Thessaly) (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
Funders
European Commission
Topics
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Animal Disease Management and Epidemiology
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Virus Infections Studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Viral Infections and Immunology Research
Keywords
encephalomyocarditis virus, rats, basic reproduction number, pathogenicity, horizontal transmission, rodent reservoirs, neutralizing antibodies
MeSH terms
Animals, Antibodies, Viral, Disease Reservoirs, Encephalomyocarditis virus, Feces, Greece, Neutralization Tests, Random Allocation, Rodent Diseases, Rats, Wistar, Cardiovirus Infections, Disease Transmission, Infectious, Rats

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