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An outbreak of multidrug-resistant Salmonella enterica serotype Typhimurium infections occurred in Pennsylvania and New Jersey. A case-control study implicated pasteurized milk from a dairy, and an inspection indicated the potential for contamination after pasteurization. Dairy cattle are the likely reservoir, and milk may be an important vehicle of Salmonella transmission to humans. P asteurization, or heat treatment, of milk is an important milestone in public health that contributed to dramatic declines in many infectious diseases. Despite the important public health gains achieved, outbreaks associated with pasteurized milk continue to occur (1-3). We describe a recent outbreak associated with pasteurized milk.
Olsen et al. (2004) studied this question.