Table 5.

Minimum inhibitory concentrations of polymyxin B/trimethoprim (PT) and rifampin alone and in combination toward S. aureus isolates demonstrating PT resistance.

Strain	Alone µg ml−1		Combination µg ml−1		2:1 µg ml−1
	PT	Rifampin	PT	Rifampin	PT	Rifampin
UAMS-1	2.1	0.01	0.67	0.0015
RW53	20	0.005	11.2	0.016	0.078	0.039
1181991	10	0.02	6.09	0.0088	0.078	0.039
1308117	10	0.01	5.6	0.0088	0.078	0.039
1352268	10	0.01	5.13	0.0073	0.078	0.039
1519248	>20	0.02	11.2	0.016	0.079	0.039
1502286	>20	0.02	11.2	0.016	0.078	0.039
1550501	20	0.02	11.2	0.016	0.078	0.039
1510590	20	0.01	11.2	0.016	0.078	0.039
1510591	20	0.02	11.2	0.016	0.078	0.039
1566351	10	0.01	5.6	0.008	0.078	0.039
1581830	10	0.02	11.2	0.016	0.078	0.039