Abstract: Drug sensitivity test was performed on forty-four E. coli isolates using nine antimicrobial drugs. The latter were ampicillin, chloramphenicol, erythromycin, gentamycin, nalidixic acid, neomycin, streptomycin, sulfamethoxazole/trimethoprim and tetracycline. A considerable variation in their pattern of sensitivity was shown. Almost all isolates showed sensitivity to chloramphnicol. On the other hand, the strains were all insensitive to erythromycin. Forty-one patterns of drug susceptibility reactions were obtained. Each pattern was represented by a single strain with the exception of three of them which included two strains each.On the whole, 26 patterns of drugs resistance that ranged between resistance to a single drug and seven drugs were encountered A scheme of drug susceptibility patterns is put forward for use in routine clinical diagnosis as well as epidemiological investigations.
O. Salwa Ellaithi , E.D.M. ElAmin and A.E. Abdalla , 2007. Drugs Susceptibility Reactions Patterns and Multiple Drug Resistance of Escherichia coli Isolated from Diarrhoeic Calves in Sudan. Journal of Animal and Veterinary Advances, 6: 371-374.