Analysis of methicillin-resistant Staphylococcus aureus to commonly uscd antibiotics

Aim To analyze the incidence and resistance of methicillin-resistant Staphylococcus aureus(MRSA) to common used antibiotics.Methods The bacterial strains were automatically identified with French Merieux aureus identification kits and ATB Expression,and then the antibiotic resistances were tested by standard Kirby-Bauer method.Results A total of 765 strains were isolated during 2007~2009,in which 382 were MRSA(49.9%).All isolates were susceptible to vancomycin and linezolid.The resistant rate of the isolates of MRSA to penicillin,erythromycin,ciprofloxacin,levofloxacin,clindamycin,teicoplanin,and cotrimoxazole were 100%,96.9%,89.8%,83.9%,88.0%,74.2% and 43.0%.Conclusions The isolation rate of MRSA increased significantly.For effective supervision and control of Staphylococcus aureus infection and dealing with multiple resistance,susceptibility survey of MRSA to antibiotics be performed to guide rational use of clinical drugs.