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在新英格兰州三个饮水系统的各处和自来水厂,于处理水的同时,在处理后回流时和一个主供水管破裂一周后,修复完毕时所采的102份水样,用常用的m-Endo LES琼脂培养基和新推出的m-T7琼脂培养基分别培养分析,发现分离的大肠杆菌90％以上是受损伤的。受损伤的大肠杆菌在m-T7琼脂培养基上的恢复率是在m-Endo LES琼脂培养基上的恢复率的8～38倍,大多数样品
Two hundred and twenty water samples taken at the time of remediation were taken at the three drinking water systems in New England and at the waterworks, at the same time as the treatment of water, after treatment and after one main water supply had been ruptured, -Endo LES agar medium and the newly-introduced m-T7 agar medium separately and found that more than 90% of isolated Escherichia coli was damaged. The recovery rate of damaged Escherichia coli on m-T7 agar medium was 8 to 38 times that of the m-Endo LES agar medium, and most of the samples