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1992年8～9月,呼和浩特市土默特左旗西马群村发生一起由血清学(肥达氏反应)证实的丙型副伤寒暴发流行。该村159户,683口人,患病56户共81例,罹患率11.86%。疫源指数1.45.同家多发17户42例,除2户4例为同发病例外,其他15户38例病人中原发病例15剜,续发病例23例,续发病例与原发病例之比为1.5:1.为了查清多发疫源地的传播方式,笔者应用二项分布分析了病例家庭聚集性。一、资料来源:该村的流行病学调查资料.二、方法与结果:分析病例分布是否符合二项分
From August to September 1992, an outbreak of type C paratyphoid confirmed by serology (Widal’s reaction) occurred in West Mazu village, Tumotezuoqi, Hohhot. The village of 159 households, 683 people, 56 cases of a total of 81 cases, the attack rate of 11.86%. Foci index 1.45. The same family with more than 17 cases in 42 cases, with the exception of 2 households in 4 cases with the same case, the other 15 38 cases of primary cases in 15 cases, 23 cases of continued cases of recurrence and primary cases Ratio of 1.5: 1. In order to find out the mode of transmission of multiple epidemic areas, the author uses binomial distribution analysis of case family aggregation. I. Source: Epidemiological survey data of the village II. Methods and Results: To analyze whether the distribution of cases meets the dichotomous