Abstract
Antibacterial susceptibility tests against hundred (100) strains, belonging to 11 species of Gram negative bacteria, were carried out by standard disc diffusion method. These comprises Escherichia coli (30 strains), Klebsiella pneumoniae (25), Pseudomonas aeruginosa (15), Salmonella typhi (5), Salmonella paratyphi A (1), Salmonella paratyphi B (1), Proteus mirabilis (10), Proteus vulgaris (2), Shigella dysenteriae (5), Yersinia enterocolitica (1), Enterobacter aerogenes (5). In the present study, out of 100 isolates, 2% isolates were found resistant to streptomycin, 9% to gentamicin, 38% to ampicillin, 7% to neomycin, 20% to kanamycin, 22% to chloromphenicol, and 40% isolates were found resistant to tetracycline. It was observed that multi-drug-resistant strains were more common as compare to single-drug-resistant strains of Gram negative bacteria i.e. 48% strains were found multi-drug-resistant while single-drug-resistance was found in only 22% strains.
