Survey of community-associated methicillin-resistant Staphylococcus aureus in Korea-authors' response

摘要

Sir,We thank Park et al. for their thoughtful comments on our study on community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) in Korea.2 We agree that our finding of multidrug-resistant (MDR) CA-MRSA should be interpreted with caution. When we re-analysed our data on antibiotic resistance according to the clinical significance of the CA-MRSA isolates, the MDR rate was 47% in the pathogen group, 38% in the colonizer group and 97% in the group of undetermined significance (Table 1). The rates of MDR were also very different depending on the sequence types (STs) of the CA-MRSA isolates. For instance, only 1 of 25 isolates of the ST72 clone was MDR, whereas all the isolates of the ST5 and ST239 clones were MDR. Of the 31 isolates of the staphylococ-cal cassette chromosome mec (SCCmec) IVa clone, 8 (26%) were MDR.