1994年3月5日，我校学生因进食贮藏过久、未煮熟的四季豆，引起急生中毒55例，现报告如下：1食用情况3月5日中午，学生食用食堂制作的烧四季豆71人（男50人，女21入），年龄17～22岁、经检查未售完的四季豆本煮熟，有生涩味，每份250g．有一人吃两份的，也有2人吃一份的，绝大 March 5, 1994, our school students eating too long, uncooked green beans, acute poisoning caused 55 cases are as follows: 1 food situation at noon on March 5, students eat canteen burning four seasons 71 beans (male 50, female 21 into), aged 17 to 22 years old, after checking unsold four-season bean cooked, astringent taste, each 250g. One person to eat two copies, there are two people to eat one, vast