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[目的 ]了解O157∶H7大肠杆菌的分布特征和污染程度。 [方法 ] 2 0 0 1年 5~ 10月在太康县采集腹泻病人、家畜家禽、外环境标本 ,用O157∶H7大肠杆菌特异性筛查法进行病原体分离培养 ,应用细胞学技术进行毒素因子测定。 [结果 ]检测 12 14份标本 ,5 2份检出O157∶H7大肠杆菌 ,并测出毒素基因 ,显示有 5个毒素因子组合型。其中 ,3 40份腹泻病人标本 12份检出 ,70 4份家畜家禽粪便 3 2份检出 ,13 3份坑塘水、蔬菜、生熟肉食等标本 7份检出 ,3 7份苍蝇标本 1份检出。[结论 ]O157∶H7大肠杆菌在腹泻病人及家畜家禽中散在而较为广泛存在 ,并对环境造成污染。
[Objective] To understand the distribution and contamination of O157: H7 Escherichia coli. [Methods] From May to October 2001, diarrhea patients, livestock and poultry, and environmental samples were collected from Taikang County. Pathogens were isolated and cultured using O157: H7 Escherichia coli specific screening method. The cytotoxicity of toxin Determination. [Result] A total of 12 14 samples were detected, 52 of which were detected O157: H7 Escherichia coli, and the toxin genes were detected. There were 5 combinations of toxin factors. Among them, 12 samples from 3 40 patients with diarrhea, 32 from 70 4 livestock and poultry manure, 13 3 samples from pit pond water, vegetables, raw and cooked meat, etc. were detected, and 37 samples from flies Check out. [Conclusion] Escherichia coli O157: H7 is widely dispersed in diarrhea patients and livestock and poultry, and pollutes the environment.