一、事件发生经过我市西司门街杨××家于1973年元月11口中午饭后30分钟至2小时内,全家8口人有5人相继发病。据了解,凡在家吃午饭(面条)的均发病;未吃午饭面条的未发病。所吃面条为自己家里加工的,面粉是在粮店购买。面条中加有少量新鲜大白菜、葱花及盐,未加其它调味品。所用食盐是以工业用 First, the incident occurred through the city Xisimen Street Yang × × home in January 1973 after 11 mid-day lunch 30 minutes to 2 hours, the whole family of 8 people have 5 people have the disease. It is understood that where at home eating lunch (noodles) are the incidence; not eaten lunch noodles are not affected. Eaten noodles for processing at home, the flour is purchased in grain stores. Noodles add a small amount of fresh cabbage, green onions and salt, without additional spices. The salt is used for industrial purposes