Styria has implemented a Salmonella surveillance programme in pork production based on the serological monitoring of pig herds. 10,000 blood samples of slaughter pigs from 1000 farms were investigated in 1999, and 7040 samples from 704 farms in 2000. Samples were analysed using the SALMOTYPe Meat Juice ELISA of Labor Diagnostik, Leipzig. In 1999, 95.5 % of the herds tested negative, 4.2 % were suspected to be positive and 0.3 % produced positive results, i.e. exceeded the "cut-off' value of 40 %, while the respective results for 2000 were 93.5 %, 6.3 % and 0.3 %. The low prevalence of seropositive results is confirmed by the results of bacteriological examinations in meat cutting facilities.