流行性乙型脑炎简称乙脑,是由乙型脑炎病毒感染引起的以大脑病变为主的急性传染病。本病发病急、进展快、病情凶险、病死率高,幸存者常常留有严重的后遗症,如智力障碍、失语、言语迟钝、肢体扭曲畸形、瘫痪、吞咽困难、视力及听力障碍、癫痫、性格改变、精神异常等,留下终 Japanese encephalitis, abbreviated as JE, is an acute infectious disease mainly caused by encephalitis virus infection. The onset of the disease is acute, rapid progression, dangerous conditions, high mortality, survivors often have serious sequelae, such as mental retardation, aphasia, speech retardation, limb deformity, paralysis, dysphagia, visual acuity and hearing impairment, epilepsy, personality Change, mental disorders, etc., leaving the end