Table 2.

Susceptibility of KPC-producing Klebsiella pneumoniae isolates

	Vitek MIC μg mL−1 to:											E-test MIC μg mL−1 to:
K. pneumoniae isolate	TZP	FOX	CTX	CAZ	CEP	GEM	ANK	CIP	COL	IPM	MEM	IPM	MEM	TYG	COL
A1	≥128/4	≥64	16	16	8	≥16	16	≥4	≥16	8	4	8	4	2	24
A2	≥128/4	≥64	16	16	8	≥16	16	≥4	≥16	8	4	8	4	2	24
B1	≥128/4	≥64	16	16	8	≥16a	32	≥4	≥16	≥16	4	8	8	2	24
B2	≥128/4	≥64	16	16	8	≥16	32	≥4	≥16	≥16	4	8	8	2	24
B3	≥128/4	≥64	16	16	8	≥16	32	≥4	≥16	≥16	4	8	8	2	24
B5	≥128/4	≥64	16	32	8	≥16	32	≥4	≥16	≥16	8	16	8	2	24
B6	≥128/4	≥64	≥64	≥64	≥64	≥16b	≥64	≥4	≥16	≥16	≥16	≥32	≥32c	2	24

PTZ, piperacillin-tazobactam; FOX, cefoxitin; CTX, cefotaxime; CAZ, ceftazidime; CEP, cefepime; GEM, gentamicin; ANK, amikacin; CIP, ciprofloxacin; COL, colistin; IPM, imipenem; MEM, meropenem; TYG, tigecycline.

^aE-test MIC 36 μg/mL.

^bE-test MIC 96 μg/mL.

^cE-test MIC 256 μg/mL.