Officials in Finland remain stumped by a large outbreak linked to school meals.
The Finnish Food Authority (Ruokavirasto), National Institute of Health and Welfare (THL), and local agencies are investigating the outbreak, which affected more than 800 people. The incident occurred in mid-August in Mikkeli, with mainly children falling sick.
Ruokavirasto reported that examining food samples has not found any typical food poisoning bacteria, toxins, or signs of microbiological spoilage.
Only sensory changes and differences in acidity have been observed in tortillas, which were suspected to be the cause of illness.
Food tests have looked for bacteria of the Bacillus cereus group and coagulase-positive staphylococci, as well as their toxins, molds, and other microbes.
FoodWorld 