本文报告了由于水源污染而造成的一次儿童水型伤寒的暴发流行。暴发流行概况临湘铁路小学自5月7月开始至5月25日19天内共发病64例,年龄在6～15岁之间,发病人数占全校人数50.8%,其中5月16日至19日4天发病居多,达32例,其发病年龄、性别、班级分布无明显的特异表现。64例中症状较重者34例,集中于 This article reports the outbreak of a child typhoid caused by water pollution. Outbreak Epidemic situation Linxiang Railway Primary School from May to May 25, 19 days within a total of 64 cases, aged 6 to 15 years old, the incidence of the total number of school accounted for 50.8%, of which May 16 to 19 4 days mostly, up to 32 cases, its age, gender, class distribution no obvious specific performance. Among the 64 cases, 34 cases had severe symptoms and were concentrated in