随着儿童计划免疫的普及,群众防病意识的提高,麻疹疫苗报告接种率适龄儿童已达95％以上,麻疹发病率显著下降。但总有一部分儿童未能及时接种疫苗,特别是流动人口中适龄儿童的未接种者,以及其他原因造成的无效接种,如母体抗体干扰、个体免疫应答的差异、疫苗贮运不当造成疫苗失活和接种不规范等问题。而未接种麻疹疫苗者和各种原因的无 With the popularization of children’s planned immunization and the improvement of people’s awareness of disease prevention, the coverage rate of measles vaccine has reached over 95% of the school-age children and the incidence of measles has dropped significantly. However, there are always some children who have not been vaccinated in time, especially non-vaccinated children of school-age children in the floating population, as well as other inactivated vaccinations such as maternal antibody interference and differences in individual immune responses. Vaccine inactivation And vaccination is not standardized and other issues. Those who have not been vaccinated against measles and various causes