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目的了解登封市小肠结肠炎耶尔森菌(以下简称为小肠结肠炎菌)生物学特性及宿主分布特征。方法从宿主粪便及猪咽拭子中分离培养小肠结肠炎菌,进行生化鉴定、血清分型、毒力基因检测。结果 2011年采集标本共计1 988份,分离出358株小肠结肠炎菌,总检出率为18。其中,猪标本检出率最高,达23.91%(333/1 393);其次是犬标本检出率为17.86%(5/28)。毒力基因ail+、yst A+、yst B-、yad A+、vir F+与ail+、yst A+、yst B-、yad A-、vir F-各占77.37%(277/358)、2.51%(9/358),均为致病性菌株。结论小肠结肠炎菌的主要宿主为猪与犬,以致病性菌株居多,应警惕致病性小肠结肠炎菌通过宿主动物传播给人及其他动物的危险。
Objective To understand the biological characteristics and host distribution characteristics of Yersinia enterocolitica (hereinafter referred to as enterocolitis) in Dengfeng City. Methods The colibacillosis of enterocolitis was isolated from host feces and swine throat swabs for biochemical identification, serotyping and virulence gene detection. Results A total of 1 988 specimens were collected in 2011, and 358 strains of enterocolitis were isolated with a total detection rate of 18%. Among them, the highest detection rate of pig specimens, up to 23.91% (333/1 393); followed by the detection rate of canine specimens was 17.86% (5/28). The virulence genes ail +, yst A +, yst B-, yad A +, vir F + and ail +, yst A +, yst B-, yad A-, vir F- accounted for 77.37% (277/358), 2.51% (9/358 ), Are pathogenic strains. Conclusion The main host of enterocolitis is swine and canine, which leads to the majority of pathogenic strains. Therefore, we should be alert to the danger of pathogenic enterocolitis bacteria being spread to humans and other animals through host animals.