Table 1.

Antimicrobial susceptibilities of EMRSA-15 isolates

Antimicrobial agents (breakpoint MIC, mg/liter)No. (%) of isolates resistant
Classical isolates (n = 55)Variant isolates (n = 90)Total (n = 145)
Ciprofloxacin (>1)52 (94.4)68 (75.6)120 (83)
Erythromycin (≥0.5)44 (80)56 (62.2)100 (69)
Fusidic acid (≥1)2 (3.6)1 (1.1)3 (2)
Gentamicin (>1)0 (0)0 (0)0 (0)
Kanamycin (>4)1 (1.8)0 (0)1 (0.7)
Methicillin (≥4)54 (98.2)89 (98.9)143 (99)
Mupirocin (≥8)0 (0)1 (1.1)1 (0.7)
Neomycin (>4)0 (0)0 (0)0 (0)
Rifampin (≥0.12)1 (1.8)0 (0)1 (0.7)
Streptomycin (>4)1 (1.8)0 (0)1 (0.7)
Teicoplanin (≥4)0 (0)0 (0)0 (0)
Tetracycline (>1)0 (0)3 (3.3)3 (2)
Vancomycin (≥4)0 (0)0 (0)0 (0)