BEIJING (AP) — Nearly 300 Chinese primary and middle school students have been sickened by unsafe food or water provided by their schools in five separate incidents over the past week.

The rash of food poisoning cases coincides with the start of the new school year.

The official Xinhua News Agency said Thursday that the latest case occurred Wednesday in Shandong province, affecting 86 primary school students who became ill after eating lunch. It said 10 remained under observation in hospitals and authorities were testing the school’s food for problems.

Xinhua said four other cases affecting 205 kids were reported in Hebei and Jiangxi provinces in the past week.

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