This study was carried out to isolate and identify the Commensal Staphylococcus aureus from the technicians worked in diagnostic X-Rays field ,the specimens involved swabs from Ear, Nose, Larynx from different hospitals in Baghdad, Tikreet and Karkuk, its susceptibility to Methicillin and other antibiotics was tested, the study included the resistance of these strains against ultraviolet rays ,probable changes happened ,the resulet can be summarized as :the results showed that 148 bacterial isolate was Gram positive cocci, (95) belongs to Staphylococcus aureus ,most of strains were resistant to beta lactam group, most of strains showed high susceptibility against antibiotics used,(36) isolate produced beta lactamase enzyme , (21) isolate of them were resistant to Methicillin , the study also showed that bacterial exposure time to X ray had a clear effect on antibiotic rasestance .
The study showed that long term exposure of Staph. aureus to X ray had aclear effect on its high resistance against UV rays ,and isolate of short term exposure was more reliable to change in several characteristics of antibiotics resistance |