[Incidence of methicillin-resistant and methicillin-susceptible Staphylococcus strains in clinical materials].

365 S. aureus and 165 CNS were evaluated for susceptibility to methicillin. They were received from various clinic of Clinical Hospital in Bydgoszcz. The bacterial cells that grew in the presence of 25 mg methicillin/L were evaluated as methicillin-resistant. It was found that the 129 MRSA and MRCNS. Incidence depended on the kind of clinic and material. Most often they were isolated from clinic: Surgery, Neurosurgery, Intensive Care Unit, Neurology and Ortopedics. They were from: intubation tube, catheters and vascular grafts. The methicillin-resistant S. epidermidis and S. haemolyticus showed above 50% resistance to methicillin.