The greater the curve corresponding to a scenario, the less the mean prevalence of shedding in the groups of slaughter pigs. Clearly, the greatest curve was the one obtained for the scenario Mix0-Growth1-Decont100, but this curve was very close to the one obtained for the reference scenario Mix0-Growth1-Decont99.9. Results of cumulative frequency exhibited very similar patterns for decontamination efficacies equal to 100, 99.9, and 99%.