1998年4月16日按免疫程序要求在学校低年级学生(5～8岁)进行乙脑疫苗接种,采取上臂三角肌皮下注射,剂量为0.5毫升。疫苗系卫生部上海生物制品研究所生产,批号970206。该校接种疫苗的132名儿童中有4名儿童(3男1女)在接种后的20分钟内感觉全身发热、剧痒,出现广泛分布于全身的苍白色不规则风团,融合成大片。眼睑、口唇水肿,伴剧烈呕吐。诊断:急性荨麻疹。给予高糖、葡萄糖酸 On April 16, 1998, according to the immunization program, junior school pupils (5-8 years old) were vaccinated with Japanese encephalitis to take a subcutaneous injection of the upper arm deltoid at a dose of 0.5 ml. Vaccines Department of Health Shanghai Institute of Biological Products, batch number 970206. Four of the 132 children vaccinated (3 males and 1 females) in the school felt feverish and itchy within 20 minutes after inoculation, with pale, irregular winds spreading widely throughout the body. Eyelid, lip edema, accompanied by severe vomiting. Diagnosis: Acute urticaria. Give high sugar, gluconic acid