Typhimurium outbreak associated with frozen tomato cubes at a restaurant in western Finland, January to February 2021.

Several individuals reported gastrointestinal symptoms following meals consumed in late January 2021 at a restaurant in western Finland. We conducted a retrospective cohort study and defined a case as a person who ate at the lunch restaurant between 27 and 29 January 2021 and had stomach pain, vomiting or diarrhoea and/or a laboratory-confirmed Typhimurium infection within 2 weeks after the exposure. We collected faecal and food samples for microbiological analysis.