脊髓灰质炎疫苗常规免疫与辅以强化免疫的流行病学效果比较

COMPARISON OF EPIDEMIOLOGICAL EFFECT BETWEEN ROUTINE IMMUNIZATION AND ROUTINE IMMUNIZATON PLUS NATIONAL IMMUNIZATION DAYS WITH OPV

本地区在开展口服脊髓灰质炎（脊灰）疫苗（ＯＰＶ）常规免疫与在常规免疫基础上辅以强化免疫两个阶段，脊灰发病率明显不同。将免疫接种率与发病率两变量关系以曲线配合，前阶段曲线降而后升，后阶段曲线稳步下降。分析导致两种免疫手段的流行病学效果差异，社会干预因素起到了重要作用。

n Longyang prefecture,immunization campaigns with oral poliovirus vaccine (OPV)had been car-ried out in two stages,the first stage of routine delivery strategy and the second stage of routineimmunization plus National immunization days strategy.The incidenee of poliomyelitis differsignificantly between two stages,curve fittingness between immunization coverage and incidence showed that curve trend came down and then went up in the first stage,and then descended steadi-ly in the second stage.Through analysing the causes,social factor oceupies an heavily proportion.