Table 1.

MICs of selected antibiotics for K. pneumoniae strain 5639 and E. coli strain J53 and its transconjugants

Strain or TC	Method	MIC or MIC range (μg/ml) ofa:
		ETP	IPM	MEM	FEP	CAZ	CTX	TZP	SAM	AMK	TGC	PMB	CIP
K. pneumoniae 5639	BMD	0.25	0.25–2.0	≥0.12	≤1	4	4	16/4	32/16	32	0.5–1	0.5–1	2
	Vitek 2	≤0.5	≤1.0	≤0.25	≤1	4	NDb	ND	≥32	≥64	1	ND	1
E. coli J53	BMD	≤0.12	≤0.12	≤0.12	≤1	≤2	≤1	≤8/4	ND	≤8	≤0.12	2	≤0.5
	Vitek 2	≤0.5	≤1.0	≤0.25	≤1	≤1	ND	ND	4	≤1	≤0.5	ND	≤0.25
E. coli J53 VIM-24 TCc	BMD	0.25–0.5	0.5	≤0.12	2–4	16–32	8	16/4–32/4	ND	≤8	≤0.12	1–2	≤0.5
	Vitek 2	≤0.5	2–4	≤0.25	≤1	8–16	ND	ND	≥32	8–16	≤0.5	ND	0.5

^aETP, ertapenem; IPM, imipenem; MEM, meropenem; FEP, cefepime; CAZ, ceftazidime; CTX, cefotaxime; TZP, piperacillin-tazobactam; SAM, ampicillin-sulbactam; AMK, amikacin; TGC, tigecycline; PMB, polymixin B; and CIP, ciprofloxaxin.

^bND, not determined.

^cShown are the MIC ranges for four transconjugants.