Table 1.

Susceptibility tests, using the Etest method, of isolates demonstrating growth in polymyxin B above skip well concentrations

Drug	MIC (μg/ml) for isolate:
	CIEL1	CIEL1pxn8	KCEL6	KCEL6pxn4
Polymyxin B	3	96	0.5	128
Cefepime	0.032	0.047	0.125	0.094
Meropenem	0.125	0.094	0.125	0.094
Gentamicin	1.5	1.5	3	1.5
Amikacin	2	1.5	2	1.5
Ciprofloxacin	0.006	0.012	0.023	0.023
Tigecycline	0.75	0.5	1.5	1