鼠伤寒沙门菌生物学分型方法在流行病学调查和监测中的应用

The Application of a Salmonella typhimurium Biotyping Method to the Epidemiological Surveys and Surveillance

为探索用简便有效的手段对鼠伤寒沙门菌感染进行调查监测,采用英国学者Duguid的鼠伤寒沙门菌生物学分型方法,应用于医院感染监测、病例追踪、食物中毒调查。结果:从医院感染患儿分离菌侏的主要生物型与医院环境污染、医务人员携带菌株的生物型分布近似;截瘫患者尿中菌株与从其家庭环境和妻子手上分离菌侏生物型别一致;从食物中毒者和剩菜中分离菌株的生物型别与鸭子携带菌株主要生物型别一致。结论:患儿医院感染是由于病房环境污染、医务人员带菌引起;截瘫患者泌尿系感染与家庭环境污染及其妻带菌有关,而非医院感染;食物中毒是由于食用带菌鸭子所致。

In order to explore a new and effective means to the investigation and surveillance on Salmonella typhimurium infection, the authors applied a biotyping method of S. typhimurium invented by Duguid to the surveillance of nosocomial infection and tracing of infected case as well as cause of food- poisoning. Results showed that the major biotypes of strains isolated from children of acquired nosoeomial infection with biotypes of strains from hospital environment and medical staff were quite similar. The biotype of cultures from the urine in a paralytic patient was the same as from the environment of the household and the wife' s hands. The biotypes of strains identified from food -poisoncases and leftovers was the same as isolated from ducks. It is believed that nosocomicial infection among children was caused by contamination of bacteria in hospital environment and carriers of medical staff. The urinary infection of a paralytic patient was due to environment pollution of the household, but not to nosocomial infection. The food - poisoning case was caused by the consumption of ducks infected with the bacteria.