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目的调查天津市某社区于强降雨积水后发生一起腹泻暴发的原因并进行处置。方法于2012年7月对该社区疫情进行现场流行病学调查,并采集相应生物和环境样品进行检测,提出干预措施。结果本起腹泻暴发疫情造成78人发病,罹患率为4.23%(78/1 844)。其中以腹泻(100%)、腹痛(71.79%)为主,呕吐(29.49%)、发热(26.92%)、恶心(5.13%)比例较低;33份病例粪便标本中20份诺如病毒核酸阳性;蓄水池管网末梢水微生物指标超标。经及时采取有针对性的饮水消毒等措施后未见相应病例发生。结论本次疫情是一起因雨后积水污染水源引发的诺如病毒感染性腹泻暴发,进一步提示了水源卫生防护和饮水消毒的重要性。
Objective To investigate the causes of an outbreak of diarrhea in a community in Tianjin after heavy precipitation and waterlogging and to deal with it. Methods In July 2012, the epidemic situation in this community was investigated on the spot and the corresponding biological and environmental samples were collected for testing. Intervention measures were put forward. Results The outbreak of diarrhea caused 78 outbreaks with an attack rate of 4.23% (78/1 844). Among them, diarrhea (100%) and abdominal pain (71.79%) were mainly vomiting (29.49%), fever (26.92%) and nausea (5.13%), while 20 cases of norovirus positive samples ; Water pipe end of the water pipelines microbiological indicators exceeded. After timely and targeted drinking water disinfection and other measures have not seen the corresponding cases. Conclusions The outbreak was an outbreak of norovirus infectious diarrhea triggered by water accumulated after rain, further suggesting the importance of water hygiene protection and drinking water disinfection.