Methods?Erythromycin resistant phenotypes were classified with erythromycin and clindamycin discs using the D test method. ErmA,ermC and msrA genes were amplified by multiplex PCR.

• 方法用NCCLS标准D试验检测红霉素和克林霉素的耐药表型,通过多重PCR检测耐药基因ermA、ermC和msrA。