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我县地处陕南山区,1979年实行计划免疫,1987年完善冷链装备并投入正常运转,城镇建立了免疫接种门诊,农村每2个月进行一次接种,覆盖面达100％,麻疹年发病率大幅度下降,但1989年2—7月份,麻坪、赤岩、庙岩三乡先后发生3起麻诊局部暴发流行,疫情波及面广,发病率高,是我县实施冷链后一次最大流行。为了了解和掌握其流行特点及原因,我们及时进行了现场调查,现将调查结果分析如下: 一、调查的结果 1.疫情概况:3起麻诊局部暴发流行,首次病例分别发生于2月24日、2月25日和4月24日。1起由外地感染,余2起传染源不详。2—7月累计发病208例,死亡2例,发病率为48.45/10万,病死率为
My county is located in Shannan mountainous areas, in 1979 the implementation of immunization in 1987 to improve the cold chain equipment and put into normal operation, the town set up an immunization clinic, rural vaccination every 2 months, coverage of 100%, the annual incidence of measles However, from February to July 1989, three malaria outbreaks occurred successively in Muping, Chiyan and Miaoyan Township. The epidemic spreads widely and the incidence rate is high, which is the largest epidemic since the cold chain was implemented in our county . In order to understand and master its popular features and causes, we conducted a timely field investigation, the survey results are as follows: First, the survey results 1. Epidemic situation: 3 cases of local outbreaks of cyst prevalence, the first case occurred in February 24 Day, February 25 and April 24. 1 from the field of infection, the remaining 2 infection source unknown. The cumulative incidence of 208 cases from February to July, 2 cases of death, the incidence was 48.45 / 100 000, the mortality rate was