1999年 6月 2 8日潍坊某私立学校教工食堂发生一起食物中毒 ,经证实这次食物中毒是由鲜黄花菜引起的 ,现将调查情况浅析如下。1　流行病学调查6月 2 8日中午 12∶0 0 ,90余人 (其中教职工 70余人 ,学生2 0余人 )在教工食堂进餐 ,进餐的食品为辣子鸡块、家常豆腐、肉炒芹菜、海 June 28, 1999 Weifang, a private school canteen food poisoning occurred, confirmed that the food poisoning is caused by fresh day lily, the investigation is now analyzed as follows. 1 Epidemiological survey June 12 at noon 12: 0, 90 people (including more than 70 faculty members, more than 20 students) dining in the canteen, eating food spicy chicken, homemade tofu, fried meat celery, sea