Bouda Vosough Ahmadi : "Cost effectiveness of Escherichia coli O157:H7 control in the beef chain"

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25 May 2007 13:30
Unit: Wageningen University
Location: Aula, building 362, Gen. Foulkesweg 1, Wageningen
Organisation: Wageningen University
Promotor: prof.dr.ir. R.B.M. Huirne ()
Co Promotor: Dr. H. Hogeveen, Dr. A. Velthuis

 Through the beef-supply chain, the bacterium Escherichia coli O157:H7 (VTEC O157) can pose a risk to public health. This research provided quantitative insight into the cost-effectiveness of different interventions in controlling VTEC O157 at two levels of the Dutch beef-supply chain: industrial-beef slaughterhouses and dairy farms. To estimate the effectiveness, two stochastic epidemiological models were developed and to estimate the annual net cost two deterministic economic models were developed. Results indicate that applying interventions at slaughterhouse level is more cost-effective than implementing interventions at farm level or implementing interventions at chain level. Carcass trim and steam-pasteurization are the most cost-effective decontamination measures that can be applied to a Dutch beef slaughterhouse in reducing the prevalence of VTEC O157 contaminated beef-carcass quarters. The most cost-effective on-farm interventions are vaccination of young stock and the feeding colicin to young stock.
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