رنا عبدالرحيم علي العائق2022-05-192022-05-191190https://drepo.sdl.edu.sa/handle/20.500.14154/10198This research aims to occurrence, isolation and identification of some bacteria species which that cause nosocomial infections in different hospitals (king Fahd, Ohud, Children and Women) at Madinah Al-Munuwwarah. The effects of antibiotics has been studied on the isolated bacteria by using the diffusion method, the results demonstrated that the isolated bacteria were resistant more than 50% towards antibiotics: Azteronam, Ceftazidime, Penicillin, Ampicillin and Nalidixic acid as their resistancar-SAThesis