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目的通过对腹泻事件进行现场调查分析,查明事件原因,为处理类似突发公共卫生事件提供参考。方法对事件发生发展进程进行现场流行病学调查分析。结果首例病例发生于2006年12月25日,截止2007年1月22日,共报告腹泻病例114例,罹患率0.16%,罹患率较高。调查发现水厂消毒和内部质控措施不到位,水源存在潜在污染隐患,水质检测结果显示不符合《生活饮用水标准》,人口较密集,供水管网分布密度大。14份腹泻病例大便样品和19份食品样品均未检出肠道致病菌,14份大便样品亦未检出致病病毒。结论根据现场流行病学调查、实验室检测结果及患者的临床表现,本次腹泻为病毒性感染腹泻的可能性较大,其传播来源与饮用水存在密切关联。
Objective To investigate the causes of diarrhea through on-site investigation and analysis, and provide references for handling similar public health emergencies. Methods Epidemiological investigation and analysis of the occurrence and development of the incident occurred. Results The first case occurred on December 25, 2006. As of January 22, 2007, a total of 114 cases of diarrhea were reported, with an attack rate of 0.16% and a high prevalence. The survey found that water disinfection and internal quality control measures are not in place, water potential hidden dangers of pollution, water quality test results show that does not meet the “drinking water standards”, the population is more dense, water distribution network density. No intestinal pathogenic bacteria were detected in 14 diarrhea stool samples and 19 food samples, nor in 14 stool samples. Conclusion According to the field epidemiological survey, laboratory test results and clinical manifestations of patients, this diarrhea is more likely to be virally infected with diarrhea, and its source of communication is closely related to drinking water.