Table 3.

MICs for 30 C. difficile isolates with antibiotic resistances^a

R.M. Alden strain	Phenotype	MIC (μg/ml)
		MBX-500	Moxi	Vanco	Metro
QC strain	Sensitive	2	2	1	0.5
8826	Err Clr Ter	4	32	1	0.25
8827	Err Clr Syr	4	32	1	0.25
8830	Err Clr Ter	4	32	1	0.25
8831	Err	4	2	1	0.25
8832	Err Clr Syr Lzr	2	2	1	0.25
8834	Err Clr Syr Imr Ter Lzr	4	32	1	0.5
9400	Err Clr Syr Ter	2	32	1	0.25
10540	Err Clr Ter	1	2	1	0.5
11788	Err Imr	2	32	4	1
12019	Ter	2	2	0.5	0.25
13879	Err Clr Syr Imr Ter	4	32	1	0.5
16277	Err Clr Syr	4	32	4	0.25
16278	Err Clr Syr Lzr	2	32	4	0.25
16282	Clr Imr Lzr	4	32	1	0.25
16286	Err Clr Syr Lzr	2	32	1	0.25
16458	Clr Lzr	2	32	1	0.5
19556	NAP1/027	2	32	1	2
19560	NAP1/027	2	64	1	2
19562	NAP1/027	2	64	1	2
19565	NAP1/027	2	32	1	1
19566	NAP1/027	2	32	1	1
19567	NAP1/027	2	16	1	1
19569	NAP1/027	2	32	1	1
19571	NAP1/027	2	32	2	1
19574	NAP1/027	2	64	1	2
19575	NAP1/027	2	64	1	2
19643	NAP1/027	2	32	1	1
19645	NAP1/027	4	16	4	1
19646	NAP1/027	2	32	1	4
19647	NAP1/027	2	32	1	1
MIC90		4	64	4	2
MIC50		2	32	1	1
MIC range		1–4	2–64	0.5–4	0.25–4

^ar, resistant; Er, erythromycin; Cl, clindamycin; Te, tetracycline; Sy, synercid; Lz, linezolid; Im, imipenem; NAP1/027, North American pulse-field type 1, ribotype 27; Moxi, moxifloxacin; Vanco, vancomycin; Metro, metronidazole.