预防接种副反应(AEFI)是指预防接种后发生的、被认为由预防接种引起的任何医学事件。
Adverse Events Following immunization (AEFI) is a medical incident taking place after immunization, and is been believed to be caused by the immunization.
她是在接种了HPV疫苗(预防宫颈癌的疫苗)之后不久死亡的。有人猜测，娜塔莉·莫顿是死于疫苗注射的严重副反应。
She died shortly after receiving the HPV vaccine against cervical cancer, and there was speculation that she had suffered a severe reaction to the jab.
副反应与疫苗所要预防的感染极为相似，且疫苗接种和副反应之间存在非随机的时间相关性。
A strong similarity of the adverse event to the infection the vaccine is intended to prevent, and there is a non-random temporal relationship between administration and the adverse incident.
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