Some children were taken ill and complained of vomiting after eating the food served under mid-day meal at the primary school in Sunderpur village in Hassanganj tehsil, District Basic Education Officer Mukesh Kumar Singh said.
He said a team was sent and all 47 students were admitted to community health center at Nawabganj from where they were released after treatment.
Singh said a sample of food served has been taken and a case has been lodged against the cook.