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目的了解小肠结肠炎耶尔森菌在徐州地区的病原学及流行特征,以控制此菌引起的感染扩散。方法不同季节采集人和动物的粪便、食品、苍蝇,按照《全国小肠结肠炎耶尔森菌监测方案》、《小肠结肠炎耶尔森菌》进行检测。结果4类样品均检出该菌,检出率为6.23%;2011年检出率最高,为7.79%(60/770);2008年最低,为5.58%(43/770)。动物粪便检出率从高到低依次为鸡、猪、狗、牛、羊;春季该菌宿主检出率为11.25%(117/1 040),秋季为3.65%(38/1 040),差异均有统计学意义(χ2=10.903,P=0.012)。猪在动物宿主中致病菌检出率最高,为5.00%(16/320),构成比为42.11%(16/38),致病菌构成比为72.73%(16/22),其次为羊、狗、牛;且均为O3血清型、生物3型;腹泻患者、食品、苍蝇和鸡粪中均未检出致病菌。结论该菌在本地区人和动物的粪便、食品、苍蝇中普遍存在,传染链完整;人和动物感染有季节差异,春季比秋季感染率高;主要致病菌为O3血清型、生物3型,其主要宿主为猪。
Objective To understand the etiological and epidemiological characteristics of Yersinia enterocolitica in Xuzhou area in order to control the spread of infection caused by this bacteria. Methods Human and animal feces, food and flies were collected in different seasons and tested according to the National Yersinia enterocolitica monitoring program and Yersinia enterocolitica. Results The samples were detected in 4 kinds of samples and the detection rate was 6.23%. The detection rate in 2011 was the highest (79.7%) and the lowest in 2008 (5.58% (43/770)). The detection rates of animal manure from high to low were chicken, pig, dog, cow and sheep in turn. The detection rate of host was 11.25% (117/1 040) in spring and 3.65% (38/1 040) in autumn, All were statistically significant (χ2 = 10.903, P = 0.012). The highest incidence of pathogenic bacteria was found in animal hosts (5.00% (16/320), 42.11% (16/38), 72.73% (16/22), followed by sheep , Dogs and cattle; and all were O3 serotypes and biological type 3; no pathogens were detected in diarrhea patients, food, flies and chicken manure. Conclusion The bacteria are common in the faeces, food and flies of humans and animals in the region, and the infection chain is complete. There are seasonal differences in human and animal infection, and the infection rates are higher in spring than in autumn. The main pathogens are O3 serotype, , Its main host is pig.