【摘要】 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。更多还原

【Abstract】 Objective To study the correlation between the outbreak of enterohemorrhagic Escherichia coli(EHEC) O157∶H7 infections in Xuzhou City and the carrying status in diarrhea patients,host animals,the fly and food.Methods The endemic data of EHEC O157∶H7 infections were collected and the samples of diarrhea patients,host animal,flies,and foods were collected and detected for EHEC O157∶H7,and the results were analyzed statistically.Results The diarrhea patients,host animals,flies,and foods were verified to be related to O157:H7 infection through continuous surveillance.The virulent gene of O157:H7 varied over different years.Conclusions The outbreak of enterohemorrhagic Escherichia coli(EHEC) O157∶H7 infections is positive correlation with the bacteria carrier rates of diarrhea patients,host animals,flies,and foods.更多还原