In Denmark, an ongoing surveillance of Salmonella in pork has been implemented since 1993. The surveillance has been optimised and extended in order to further reduce the Salmonella prevalence in pork. The pork industry has made an agreement with the Danish authorities, that by the end of 2006 the Salmonella prevalence in pork must be reduced with 27% compared to the prevalence by the end of 2001. The intensified Control programme for Salmonella at Danish slaughterhouses is based upon carcass swabs. The results of the samples are evaluated for each slaughterhouse every month including the results for the last twelve months. Slaughterhouses with a Salmonella prevalence of 2.3% or more on individual carcasses are noted, and if a slaughterhouse is noted 4 times during a 6 months period, it is obliged to start an intensified Salmonella control programme.