A workshop was conducted to elicit expert knowledge on infection status and transmission of salmonella in pigs at the farm of origin, during transport and during lairage. Thirty-six experts from II countries filled in a paper-and-pencil questionnaire during an international conference. The group of US and Danish experts were large enough to be analysed separately. The results indicated that experts from all countries agreed on the risk of salmonella introduction related to live animals and the significance of general hygiene and all-in/all-out management for salmonella control. However, workshop participants from Denmark put more weight on factors related to feed while experts from the USA rated factors related to rodents and people contact higher. The experts believed that 1/3 of the infected pigs from a chronically infected farm would be shedders. There were differences in risk perception between experts from Denmark and the USA regarding contamination during Jairage and transport as well as regarding incidence of salmonella shedding during transport and Jairage. In conclusion, the results reflect the differences in the level of salmonella infection and control between countries. The study does not allow differentiation between true differences in salmonella dynamics between countries or differences in perception only.