In February 2012 staff at the Minnesota Department of Health and Winona County Community Services (WCCS) investigated an outbreak of norovirus after receiving a complaint of three persons ill following a meal at a restaurant located in Elba, Minnesota. The ill persons resided in different households and dined at the restaurant on February 24. MDH interviewed the original complainants and WCCS obtained credit card receipts from the restaurant. Twenty nine patrons were interviewed and eight met the case definition. Cases represented five different households. The median incubation period for cases was 34.5 hours (range, 28.5 to 40.5 hours). The median duration of illness was 29 hours (range, 26.5 to 32 hours). One case was hospitalized for a day. Seven stool specimens (from 4 patrons and 3 employees) were submitted to MDH. All tested positive for norovirus GII. All specimens had identical nucleic acid sequences. The ill patrons reported eating a variety of different menu items. In a univariate analysis, fillet of haddock, tossed side salad, and garlic toast were statistically associated with illness. Illness histories and job duty information were obtained from 15 restaurant employees. Seven employees reported having had gastrointestinal illness previous to or on the implicated meal date including 3 employees who worked while ill on the implicated meal date. During the establishment visit, WCCS sanitarians noted bare-hand contact with all foods, including ready-to-eat foods and the manager reported they had not been excluding ill food handlers from work. Investigators concluded that multiple food items were associated with illness and that the source of contamination was one or more infected food workers.