Resistance patterns of bacterial isolates from wound infections in a university teaching hospital

A study of three hundred and sixty-five wound infections was carried out by aerobic and anaerobic methods. Sensitivity testing of the isolates was done by disc diffusion method. It was found that gram negative bacteria predominated in the aetiology of the would infections. In the post-operative would sample, 55.73% grew single bacteria spp., while 44.27% grew more than one spp. Most of the coliforms isolated showed marked resistance to some commonly used and relatively safe antibacterial agents. For example, Proteus mirabili which was most commonly isolated was resistant to Ampicillin (76.9%), Tetracycline (95.4%) and Cotrimoxazole (84.3%).