麻疹往往是一种严重疾病,常并发中耳感染或支气管肺炎。脑炎的并发率约为1/2000,存活者常有永久性脑损害和精神发育迟缓。死亡原因主要是呼吸和神经系统并发症,死亡率为1/3000。婴儿和成人的死亡危险性大于儿童和青少年。亚急性硬化性全脑炎(SSPE)是一种与麻疹病毒有关的中枢神经系统“慢病毒”感染,由于 Measles is often a serious disease, often complicated by middle ear infections or bronchial pneumonia. The concomitant rate of encephalitis is about 1/2000, survivors often have permanent brain damage and mental retardation. The main cause of death was respiratory and neurological complications with a mortality rate of 1/3000. Infants and adults are at greater risk of death than children and adolescents. Subacute sclerosing panencephalitis (SSPE) is a “lentivirus” infection of the central nervous system associated with measles and due to