Surveillance of Antimicrobial Resistance in Staphylococcus spp and Enterococcus spp / 中华医院感染学杂志

ABSTRACT

OBJECTIVE To analyze the resistant rates of Staphylococcus spp and Enterococcus spp isolated from clinical infections to antibiotics,and to provide reference method for effective control infections of Staphylococcus.METHODS The Staphylococcus spp and Enterococcus spp were identified with VITEK-32 automicrobiology system(AMS) and GPI card,drug resistance was detected with VITEK-32 AMS and GPS-107 card.Laboratory data were analyzed by WHONET-5 statistic software.RESULTS Among 1 445 Staphylococcus spp and Enterococcus spp strains isolated from clinical samples,330 strains(22.8%) were Staphylococcus aureus,872 strains(60.3%) were coagulase negative Staphylococcus,213 strains(14.7%) were Enterococcus faecalis,and 30 strains(2.1%) were E.faecium.From S.aureus 223 strains(67.6%) were MRSA,718 strains(82.3%) of coagulase negative Staphylococcus were MRCNS.The detectable rates of MRSA and MRCNS in 2004 were 75.3% and(82.3%,) which were higher than those in 2003(48.4% and 78.4%).Neither strains of S.aureus nor strains of coagulase negative Staphylococcus were found resistant to vancomycin.MRSA and MRCNS resistant rates were found(higher) than MSSA and MSCNS.From the isolated strains of E.faecalis in 2004,the resistance rates to(ciprofloxacin,) nitrofurantoin,gentamicin-500,levofloxacin,and penicillin G were found higher than that in 2003.(E.faecium)(resistant) rates were found significantly higher than E.faecalis.CONCLUSIONS Staphylococcus spp and Enterococcus spp are the main pathogens leading to clinical infections.The findings of these(surveillance)(studies) will enhance our knowledge regarding the problem of antimicrobial resistance and will serve as a basis for future policies and practice styles.