Table 2.

MICs of antibiotics.

Antibiotics	S. aureus WT	ΔtcaA
Methicillin	≥512 μg/mL	≥256 μg/mL
Teicoplanin	16 μg/mL	18 μg/mL
Vancomycin	10 μg/mL	10 μg/mL
Azithromycin	≤8 μg/mL	≤8 μg/mL
Ciprofloxacin	≤2 μg/mL	≤2 μg/mL
CLSI criteria for MIC testing (μg/ml)	Susceptible	Intermediate	Resistance
Vancomycin (S. aureus)	≤2	4–8	≥16
Teicoplanin (All Staphylococci)	≤8	16	≥32