Food service is a high-exposure setting: many meals, many hands and little time. Published surveillance gives a sense of where outbreaks occur and why, though figures vary by country and period.
39% and 47%of Australian foodborne outbreaks in two 2014 quarters were linked to restaurantsOzFoodNet quarterly reports
41%of US retail food outbreaks with an identified factor, 2017 to 2019, involved an ill or infectious workerCDC, as reported
47%of those outbreaks were norovirus, and about 19% SalmonellaCDC, as reported
10.6%were linked to improper or slow coolingCDC, as reported
Quarterly figures are small samples, and the CDC figures are taken from press reports of its 2023 paper. Check the original before quoting them.