Fig. 1

Distribution of virulence- associated genes and antibiotic susceptibility phenotype between agr-positive (n = 80) and agr-negative (n = 43) S. aureus clinical isolates. X2 test and Fisher’s test were used for comparisons. **: P ≤ 0.001. CI, ciprofloxacin; TE, tetracycline; E, erythromycin; CC, clindamycin; CX, cefoxitin