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目的研究O157∶H7感染性腹泻疫情爆发与腹泻病人、宿主动物、苍蝇、食品携带(污染)O157∶H7状况的相关程度。方法调查1999—2011年O157∶H7感染性腹泻疫情资料,采集疫情爆发点和监测点腹泻病人、宿主动物粪便标本和苍蝇、食品标本分离菌株。采用趋势χ2检验和Spearman’s等级相关进行统计分析。结果腹泻病人、宿主动物粪便标本、苍蝇、食品带菌连续性监测结果证实了其与O157∶H7感染性腹泻爆发的关系。结论江苏省徐州市O157∶H7感染性腹泻爆发与腹泻病人带菌率、苍蝇带菌率、食品带菌率关联强度大。苍蝇与污染的食品对疾病的传播作用明显。
Objective To investigate the correlation between O157: H7 infectious diarrhea outbreaks and diarrhea patients, host animals, flies and food carrying (contaminated) O157: H7 status. Methods The epidemiological data of O157:H7 infectious diarrhea from 1999 to 2011 were collected and the outbreaks and monitoring sites of diarrhea, fecal samples of domestic animals and flies were collected, and strains of food samples were isolated. Statistical analysis was performed using trend χ2 test and Spearman’s rank correlation. Results Diarrhea patients, faecal specimens from host animals, flies, and continuous monitoring of food borne infections confirmed their association with O157: H7 infectious diarrhea outbreaks. Conclusions The incidence of O157:H7 infectious diarrhea in Xuzhou City, Jiangsu Province has a strong correlation with the carrier rate, the carrying rate of flies and the carrier rate of food in diarrhea patients. Flies and contaminated food have a significant effect on disease transmission.