The students aren't allowed to bring food from home as the school provides breakfast and lunch in its canteen. While the exact cause is still not known, it could be a case of food poisoning. The food samples have been sent for evaluation.
"Some of the students at our school had mild to severe stomach ache and some also vomited. A team of doctors from Max Hospital provided medical attention to affected students," the principal said in a statement.
The management informed the parents and briefed them about the condition of their wards. "A few students who wanted to go home were sent with their parents," the statement added.
When the Noida administration was informed about the incident, food safety officers were sent to the school to take stock of the situation. However, the officers were allegedly denied access by the school management.
"After 25-30 students fell ill at this Noida school, we sent the city magistrate, circle officer and food safety officer for investigation, but the officers weren't allowed to enter the school. We are inquiring into the incident," Mr Singh told news agency ANI.
Meanwhile, the principal has assured that necessary action will be taken to investigate possible causes of the outbreak.
(With inputs from ANI)
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