H. (Huibert) Maurice: "Introduction and transmission of Encephalomyocarditis virus (EMCV) in pig farms: studies to support prevention and control"

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12 Feb 2008 16:00
Unit: Wageningen University
Location: Aula, building 362, Gen. Foulkesweg 1, Wageningen
Organisation: Wageningen University
Promotor: prof.dr.ir. R.B.M. Huirne ()
Co Promotor: Prof.dr. J.A. Stegeman (UU) (Promotor), Dr. M. Nielen (UU), Dr. F. Koenen (CODA-CERVA, Ukkel)

 The encephalomyocarditis virus (EMCV) can cause myocarditis in young piglets (followed by sudden death) or reproductive failure in sows. This research focussed on the epidemiology of EMCV in pig farms in order to support disease prevention and/or control.

EMCV infections appeared to be an individual farm problem mainly, with a variable impact. Outbreaks appeared to be clustered with an increase during autumn and winter months. Although the estimated level of EMCV transmission in pigs may result in a large number of affected/dead animals from direct pig-to-pig spread, the results indicate that in most cases minor outbreaks will occur from this route of infection. As mice appeared to be a risk factor for clinical EMCV and transmission among both rats and mice is high, these species are considered a potential introduction route and/or virus reservoir for EMCV in pig farms. Major outbreaks of EMCV in pig farms therefore mostly are considered the result of interaction between various virus spread mechanisms. Farmers are advised to avoid contacts between their pigs and potentially infected rodent populations and isolate suspected pigs as soon as possible.
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