某女，1987年10月9日出生，1998年5月12日于左上臂三角肌附着处皮下接种流行性乙型脑炎灭活疫苗（北京生物制品研究所生产，批号：970349-1，失效期：1999年1月），接种剂量0．5ml。接种后第2天接种部位出现青紫，外涂1％龙胆紫治疗，无效。4天后，患儿咽部疼痛，诊断为“扁桃腺 Female, born October 9, 1987, May 12, 1998 in the left upper quadriceps at the attachment of subcutaneous vaccination of Japanese encephalitis epidemic (Beijing Institute of Biological Products, batch number: 970349-1, expiration date : January 1999), inoculation dose 0.5ml. On the second day after inoculation, bruising appeared on the inoculation site and the treatment with 1% gentian violet was ineffective. Four days later, the patient had pharyngeal pain and was diagnosed with ”tonsils."