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1996年7月2日至10日,我市云石乡明堂、南坞等5个村发生一起腹泻病的爆发疫情。经流行病学调查、临床资料分析及实验室检查,证实系暴雨后粪便污染水源引起的产毒索性大肠杆菌(ETEC)感染性腹泻爆发流行。现将调查结果报告如下:1 流行概况1．1 背景资料云石乡位于我市南部山区,发病村在该乡中部,村与村之间紧密相连无明显分界。5个村共有1334户,人口4300人。南坞村和沈村村民饮用村水站供应的土自来水,水源分别为地表水集水池和水泥浆砌深井,均未经沉淀、消毒等处理由水站直接供水,其余3个村村民饮用自家或邻居家浅井水。部分村民习惯在村内浅水池洗菜、淘米、洗涮衣物粪具等。村内环境卫生较差,村民户厕大多有渗漏,且有较多露天粪缸。6月30日下午曾降暴雨数小时,导致粪便满溢,污染水井。发病村中有一小型农贸市场,疫情发生前一周末出售海水产品。发病前一个月未大面积喷洒农药。
July 2, 1996 to 10 days, the city of Shek Wu Ming Tong, South dock and other five villages with an outbreak of diarrhea outbreak. Epidemiological investigation, clinical data analysis and laboratory tests confirmed the outbreak of infectious toxigenic Escherichia coli (ETEC) infectious diarrhea caused by stool contaminated water source after the heavy rain. The survey results are reported as follows: 1 prevalence of 1.1 background information is located in the city of Stone Mountain in the southern mountains, the incidence of villages in the middle of the village, village and village are closely linked between no clear boundaries. A total of 1334 5 villages, population 4300 people. South Wucun and Shencun villagers drinking village water station supply of tap water, water respectively, surface water pool and cementing deep well, without sedimentation, disinfection and other water directly from the water supply station, the remaining three villages to drink their own homes Or neighbor shallow water. Some villagers accustomed to wash dishes in the shallow pool in the village, wash rice, wash rinse clothing dung and so on. Poor environmental hygiene in the village, most villagers toilet leakage, and there are more open-air dung tanks. On the afternoon of June 30, it rained for several hours, causing overflowing of manure and pollution of water wells. In the village there is a small farmers market, the sale of seawater products the weekend before the outbreak. Not a month before the onset of spraying large areas of pesticides.