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目的查明感染性腹泻暴发病因,为采取预防控制措施提供依据。方法采用现场流行病学调查方法对临海市江南街道沿岙村发生的一起村民群体性腹泻事件进行调查,采样并实验室检测以及数据资料统计分析。结果本次暴发共发病165例,临床表现以腹泻、呕吐为主,与饮用山水人群相比,饮用公共井水人群发病的RR为3.75(1.586~8.885)。公共井水的菌落总数达4 600 CFU/m L、总大肠菌群>1 600 MPN/m L,8例患者大便标本检测出轮状病毒。结论本次是一起轮状病毒引起的感染性腹泻暴发疫情,饮用公共井水可能是本次暴发的危险因素,应加强对农村饮用水的卫生管理工作。
Objective To identify the causes of outbreaks of infectious diarrhea and provide evidence for prevention and control measures. Methods An on-site epidemiological investigation method was used to investigate the mass diarrhea among villagers in Yan’an Village along Jiangnan Street in Linhai City. The sampling, laboratory tests and statistical analysis of data were conducted. Results The outbreak of a total of 165 cases of onset, the clinical manifestations of diarrhea, vomiting, compared with drinking Shanshui crowd drinking public well water crowd RR RR of 3.75 (1.586 ~ 8.885). The total number of colonies in public well water was 4 600 CFU / m L with total coliforms> 1 600 MPN / m L, and rotavirus was detected in stool samples of 8 patients. Conclusion This is an outbreak of infectious diarrhea caused by rotavirus. Drinking public well water may be a risk factor for this outbreak. Health management of rural drinking water should be strengthened.