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目的 了解娄底市麻疹发病回升的因素。 方法 在各县 (市、区 )随机抽取监测单位和调查对象 ,对影响麻疹发病的因素作横断面调查。 结果 麻疹疫苗线性采样监测结果为地、县、乡、村级效价均大于 1 .75LogTCID50 /0 .1ml,免疫成功率为 74.46 % ,其中初免儿童达 91 .2 5 % ,人群麻疹IgG抗体阳性率为 95 .56 % ,抗体平均滴度 (GMT)为 1 :854 .0 0 ,流动人口 (包括计划外生育人口 )麻疹抗体阳性率显著低于本地人口 (χ2 =37.1 6 ,P <0 .0 5)。 结论 流动人口免疫水平低下是娄底市麻疹发病率上升的主要原因 ,如何提高流动人口的麻疹疫苗接种率是当前计划免疫工作的重点和难点
Objective To understand the causes of the rise of measles in Loudi. Methods Surveillance units and subjects were randomly selected from all counties (cities and districts), and cross-sectional surveys were conducted on the factors influencing the incidence of measles. Results The results of linear sampling monitoring of measles vaccine showed that the titres of all samples were above 1.75LogTCID50 / 0.1ml at county, township and village levels, the successful rate of immunization was 74.46%, among which 91.25% of children were immunized with measles IgG antibody The positive rate was 95.56%. The average antibody titer (GMT) was 1: 854. 0 0. The positive rate of measles antibody in floating population (including unplanned population) was significantly lower than that of the local population (χ2 = 37.1 6, P <0 .0 5). Conclusion The low level of immunization in floating population is the main reason for the increased incidence of measles in Loudi. How to increase the measles vaccination rate in floating population is the key and difficult point in the current planned immunization work.