All Minnesota residents reported to have a laboratory-confirmed Salmonella or STEC infection are routinely interviewed as soon as possible by MDH staff (Team D) with a standard questionnaire about symptom history, food consumption, and other potential exposures (e.g., water, animal contact, previously ill persons) occurring in the 7 days before onset of illness. The questionnaires contain detailed food exposure questions, including open-ended food histories and objective yes/no questions about numerous specific food items, as well as brand/variety names and purchase locations. Shorter questionnaires are used to  interview cases with other pathogens.

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