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目的:对不明原因的感染性腹泻进行流行病学调查,明确诊断,控制疫情。方法:通过现场流行病学调查了解病例的暴露史,通过实验室检测粪便、肛拭、生活饮用水病原以及血清抗体检测。结果:发病病例症状相似,有相同的暴露史,关联性强;粪水检出河孤菌,病人急性期、恢复期血清采用生化实验,3份恢复期血清凝集价与急性期比呈4倍以上升高、3份呈2倍以上升高。结论:此次疫情为河孤菌污染水源引起的感染性腹泻疫情。
OBJECTIVE: To carry out epidemiological investigation of infectious diarrhea of unknown cause, to confirm the diagnosis and control the epidemic. Methods: Through the field epidemiological investigation to understand the case history of exposure, laboratory tests of feces, anal swab, drinking water, pathogen and serum antibody testing. Results: The incidence of symptoms similar to the same history of exposure, strong correlation; manure detection of river bacteria, acute and convalescent serum biochemical experiments, 3 convalescent serum agglutination price and acute phase ratio was 4 times More than three times higher than 2 times. Conclusion: The outbreak was caused by the river source of infectious diarrhea.