[Drug resistance study and detection of methicillin-resistant staphylococci]

MRSA and MRSE were identified by detecting oxacillin resistance of 107 strains of staphylococci from clinical sources. The positive rates of MRSA were 45.2% and 16.9%, respectively among the whole number of staphylococci examined. Antibiotic-resistant strains were detected with disks by Kirby-Bauer method. All MRSA and MRSE strains were multi-resistant. Resistant rates of MRSA and MRSE were higher than MSSA and MSSE. The positive rates of beta lactamase producing in MRSA and MRSE were significantly higher than MSSA and MSSE (P< 0.05 and P< 0.01) respectively. These results indicated that MRSA and MRSE were the main pathogens in the clinical infection. MRSA and MRSE detection are important for the early diagnosis and treatment of patients with infective diseases.