The school, in the central Chinese province of Henan, saw pupils suffering from vomiting, stomach pain and diarrhoea – with officials now investigating potential issues with a supplier to a number of schools in the region.
According to Chinese state media, four catering companies in Yucheng are being investigated as possible sources of the suspected food poisoning scandal.
The firms have been contracted by the local government for all public primary and secondary schools since May 2018.
Investigations are ongoing.
FoodWorld 