In November 2017, Minnesota Department of Health (MDH), Minneapolis Health Department (MHD) Environmental Health Unit and Hennepin County Human Services and Public Health Department (HCHSPH) Epidemiology Unit staff investigated an outbreak of Campylobacter jejuni infections among attendees of an event held at a restaurant on November 5.

Fifteen outbreak associated cases were identified including two laboratory confirmed cases identified through routine surveillance. No cases were hospitalized and no cases died.

A ticket was required to attend the event which focused heavily on seafood dishes. All cases and controls consumed raw oysters at the event. None of the other event food dishes were statistically associated with illness.

Thirteen types of oysters were served. Eight types were sourced from the east coast; five types were sourced from the west coast. Six oyster shucking stations were located throughout the dining room which was staffed by kitchen employees as well as front-of-the house staff. No employee illness was reported.

Investigators concluded that oysters served at the event were the most plausible vehicle of transmission, however, this could not be shown definitively.