Abstract
Qualitative and quantitative bacteriological analysis of the dialysate-water exhaust for the only two haemodialysis units found at Al-Madinah Al-Mounwwarah, were studied. Ten samples were collected over 75 days, 5 times from each site of sampling on biweekly basis. Enumeration of total viable (TVB) and total coliform (TC) bacterial counts CFU/ml, showed figures ranged from 0.0 to 5231x10(2) CFU /ml and from 0.0 to 73x10(2) CFU /ml, respectively. Specific identification of the isolated bacterial strains using API 20 E strips confirmed that isolated bacterial populations composed of 6 genera in one unit and 7 in the other. Bacterial diversity was relatively poor, but the counts were obviously-high. Determination of MIC(s), MBC(s), as well as, the MIC/MBC indexes for 153 representative strains of the bacterial population isolated in the study were done. All the studied strains exhibited resistance to at least 3, out of the 9 tested antibiotics up to MIC(S) > 100 mu g/ml.