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目的 为了探讨麻疹出现爆发的原因。方法 我们采取回顾性定群研究的方法对南阳市南召县的一麻疹爆发点进行调查。结果 有免疫史儿童发病率为 0 .38% ,无免疫史儿童发病率为 3.0 7% ,存在显著性差异 ;接种疫苗后感染麻疹的相对危险度 (RR)为 0 .12 ,疫苗保护率 (VE)为 87.6 2 % ;该行政村的麻疹接种率显著低于其他地方。结论 本次爆发不能认为接种的麻疹疫苗无效 ,主要是该行政村的漏种和未及时补种造成的
Purpose To explore the causes of measles outbreaks. Methods We conducted a retrospective cohort study to investigate the outbreak of a measles in Nanzhao County, Nanyang City. Results The incidence of children with immunization was 0.38%. The incidence of children without immunization was 3.07%. There was a significant difference between them. The relative risk (RR) of measles infection after vaccination was 0.12. The vaccine protection rate VE) was 87.6 2%; measles immunization rates in this administrative village were significantly lower than elsewhere. Conclusion This outbreak can not be considered ineffective for the measles vaccine inoculated, mainly due to the leakage of the administrative village and the lack of timely replanting