Bell J B, Elliott G E, Smith D W
Appl Environ Microbiol. 1983 Jul;46(1):227-32. doi: 10.1128/aem.46.1.227-232.1983.
The fecal coliform populations found in the raw sewages and final sewage effluents of mechanical treatment plants, a long-term retention lagoon, shorter-term retention lagoons, a remote northern Canada river, and a heavily urbanized prairie river were examined for antibiotic resistance and the possession of R factors. It was determined that there was a decrease in the percentage of multiresistant fecal coliform populations in the mechanical sewage treatment plants and shorter-term retention lagoons; however, there was an increase in populations from the long-term retention lagoon. The percentage of the populations possessing transmissible R factors was constant in the mechanical treatment and shorter-term retention facilities; however, the ability to transmit was lost in 50% of the infective population of the long-term retention facility. A striking contrast was found between the populations of the remote northern Slave River and those of the urbanized Red River. Of the fecal coliforms in the Slave River, 7.1% were multiresistant, and only 0.79% possessed transmissible R factors. The Red River fecal coliform populations were 52.9% multiresistant, and 18.77% of the total population possessed transmissible R factors. The influence of urbanization and the type of sewage treatment have been shown to affect the selection and survival of multiresistant fecal coliforms and R+ fecal coliforms. Determination of other factors influencing the development and the survival of these populations is needed for rational wastewater management and water quality consideration.
对机械处理厂、长期滞留泻湖、短期滞留泻湖、加拿大北部偏远河流以及高度城市化的草原河流的原污水和最终污水排放中的粪大肠菌群进行了抗生素抗性和R因子携带情况的检测。结果发现，机械污水处理厂和短期滞留泻湖中多重耐药粪大肠菌群的比例有所下降；然而，长期滞留泻湖中的菌群比例却有所增加。在机械处理设施和短期滞留设施中，携带可传播R因子的菌群比例保持不变；然而，长期滞留设施中50%的感染性菌群丧失了传播能力。在加拿大北部偏远的奴隶河和城市化的红河的菌群之间发现了显著差异。奴隶河中的粪大肠菌群中，7.1%具有多重耐药性，只有0.79%携带可传播的R因子。红河粪大肠菌群中有52.9%具有多重耐药性，占总人口的18.77%携带可传播的R因子。城市化和污水处理类型的影响已被证明会影响多重耐药粪大肠菌群和R+粪大肠菌群的选择和存活。为了合理进行废水管理和考虑水质，需要确定影响这些菌群发展和存活的其他因素。
