On January 19, 2018 the CDC announced a multistate outbreak of Salmonella Montevideo linked to consumption of raw sprouts served at Jimmy John's restaurants in Illinois and Wisconsin. Ten people infected with the outbreak strain had been reported by 3 states. No one was hospitalized and there were no deaths reported. Dates of illness onset ranged from December 20, 2017 to January 28, 2018.

Epidemiologic evidence indicates that raw sprouts served at Jimmy John's restaurants as the likely source. In interviews, 8 of 10 ill people reported eating at multiple Jimmy John's locations. Of these 8 people, all 8 reported eating raw sprouts on a sandwich at Jimmy John's. Two ill people in Wisconsin ate at a single Jimmy John's location in that state. One ill person reported eating raw sprouts purchased from a grocery store in Minnesota.

The traceback investigation was ongoing at the time of the initial announcement, Jan. 19.