麻疹是危害儿童常见的急性传染病,从一九六七年使用麻疹减毒活疫苗以来,发病率有大幅度的下降,对保障儿童身体健康起到了重要作用。近几年来有些地方由于漏种、错种或接种剂量不足、疫苗失效等种种原因,造成了局部暴发流行,使疫 Measles is a common acute infectious disease that endangers children. Since the measles attenuated live vaccine was introduced in 1967, the incidence of measles has dropped sharply, playing an important role in ensuring the health of children. In recent years, some places due to leakage, wrong species or vaccination dose, vaccine failure and other reasons, resulting in a local outbreak epidemic, the epidemic