Simulating Escherichia coli O157:H7 transmission to assess effectiveness of interventions in Dutch dairy-beef slaughterhouses

B. Vosough Ahmadi, A.G.J. Velthuis, H. Hogeveen, R.B.M. Huirne

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

Beef contamination with Escherichia coli O157:H7 (VTEC) is an important food-safety issue. To investigate the effectiveness of interventions against VTEC in Dutch beef industrial slaughterhouses that slaughter 500 dairy cattle per day, a Monte Carlo simulation model was built. We examined seven carcass-antimicrobial interventions, namely: hot-water wash, lactic-acid rinse, trim, steam-vacuum, steam-pasteurization, hide-wash with ethanol and gamma irradiation, and their combinations. The estimated daily prevalence of contaminated beef-carcass quarters as the output of the model was 9.2%. Contaminated was defined as containing one or more CFU on the surface of a carcass quarter at the end of the quartering stage. Single interventions (except irradiation) could reduce the prevalence to from 6.2% to 1.7%, whereas the combination of interventions could lower it to from 1.2% to 0.1%. The most powerful intervention was irradiation, which could reduce the prevalence to
Original languageEnglish
Pages (from-to)15-30
JournalPreventive Veterinary Medicine
Volume77
Issue number1/2
DOIs
Publication statusPublished - 2006

Keywords

  • steam pasteurization
  • aerobic-bacteria
  • prevalence
  • salmonella
  • carcasses
  • decontamination
  • contamination
  • hides
  • enterobacteriaceae
  • spread

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