RESISTANCE PATTERNS OF MULTI-DRUG RESISTANT ESCHERICHIA COLI CAUSING URINARY TRACT INFECTION

480 mid-stream urine samples were collected from outpatients and inpatients attending Tobruk Medical Center. 300 samples gave positive culture, 162 of these were Escherichia coli. The strains sensitivity to 14 antibiotics was tested. High incidence of resistant strains, high degree of association between resistance and complex resistance patterns of the same strains is seen. The strains were resistant to Ampicillin, Penicillin, Erythromycin, Cephalexin and Sulfamethoxazole with 91.9%, 90.7%, 82.7%, 76.5% and 57.4% respectively. The strains were sensitive to Neomycin, Oxacillin and Nitrofurtoin with 100%, 99% and 83% respectively. A symmetrical result for all strains resistance to indicated pairs of drugs were obtained. Strong association between most antibiotic occurred.