1989年5月20日,我市半程乡大郝埠村小学发生一起接种乙脑疫苗引起的小学生癔病性反应。乙脑疫苗系卫生部兰州生物制品研究所产品,批号89062。每人皮下注射0.5ml,共有250名学生接种了疫苗。首发病例为一11岁女生,于接种2小时后诉说头晕,一侧头痛,同侧上肢酸麻,继之周围8名女生也出现相同症状,其后陆续出现新病例。症状主要表现为偏头痛和 May 20, 1989, a large primary school in the city of Hao Bu Bucun primary school encephalitis vaccine caused by a primary disease caused by hysteria. JE vaccine is the Ministry of Health Lanzhou Institute of Biological Products, batch number 89062. Each subcutaneous injection of 0.5ml, a total of 250 students vaccinated. The first case was an 11-year-old girl who complained of dizziness, headache on one side, sore on the ipsilateral upper limbs after 2 hours of inoculation, followed by the same symptoms in 8 girls around her, followed by new cases one after another. The main symptoms of migraine and