It started on September 19. In the East German states of Brandenburg, Saxony, Berlin, Thuringia, and Saxony-Anhalt, a lot of children and adolescents as well as a few adults suddenly fell ill with vomiting and diarrhea.
Turns out, a wholesaler had sold contaminated frozen strawberries to commercial kitchens of three companies that made cafeteria food for schools and kindergartens, among them Sodexo. Sources among the food investigators stated that the strawberries had most likely come from China.
When the strawberries were thawed to be used in desserts, they weren’t always fully heated, and the noroviruses, which are particularly resistant to cold and heat, survived. The different thawing processes used in various facilities could explain why infections occurred in some schools but not in others, though all used the strawberries from the same shipment.
FoodWorld 