In February 2017, nine patrons became ill with norovirus after eating at a restaurant located in Minneapolis. No one was hospitalized and no one died. Stool from two ill patrons tested positive for norovirus GII.4.

Minnesota Department of Health (MDH) epidemiologists conducted a case control study. In a univariate analysis, consumption of raw oysters was significantly associated with illness (9 of 9 cases vs. 12 of 50 controls; p<0.001). No other food items were significantly associated with illness.

Shellstock tags for oysters that may have been served during the case meal dates (February 21 and Febraury 24) were provided by the restaurant and seafood supplier. Oysters were sourced from Massachusetts, Canada, and Washington State. The restaurant was unable to determine which oysters were served in the restaurant on the meal dates of interest.