A convent in Kentucky had its own dairy herd and pasteurized its own milk. In March, the convent began purchasing milk from another dairy farm in the area. This purchased milk was reportedly pasteurized at the convent, but tests suggested that the pasteurization process applied was not adequate. An outbreak of Salmonella Typhimurium infection resulted. Persons who drank the milk were approximately 6 times more likely to become ill. Since the fall of 1983, the neighbor's dairy herd reportedly had a recurrent problem with gastroenteritis. No fecal sampling of the cattle was done.