Table 3. Ribotypes, gyrA and gyrB mutations, and antimicrobial susceptibility of 18 Clostridium difficile isolates with binary toxin.

Isolate No.	Ribotype (RT)	gyrA mutation	gyrB mutation	MIC, mg/L
				MX	MZ	VA
2	RT 328	-	-	0.5	0.032	0.5
286	RT 034	-	-	0.5	0.064	0.5
294		-	Asp426Asn	>32	0.125	0.5
381		-	-	0.5	0.032	0.25
80	RT 078	-	-	0.25	0.032	0.38
61	RT 126	Thr82Ile	-	>32	0.032	0.25
173		Thr82Ile	-	>32	0.032	0.5
203		-	-	0.5	0.032	0.75
264		-	-	0.5	0.047	0.75
7	RT 127	Thr82Ile	-	>32	0.032	0.38
15		Thr82Ile	-	>32	0.032	0.38
16		Thr82Ile	-	>32	0.032	<0.016
17		Thr82Ile	-	>32	<0.016	0.38
92		-	-	0.38	0.032	0.38
293		Thr82Ile	-	>32	0.023	0.38
9	Unknown	Thr82Ile	-	>32	0.032	0.38
13		Thr82Ile	-	>32	0.032	0.38
14		-	-	0.1	0.047	<0.016

MX: moxifloxacin; MZ: metronidazole; VA: vancomycin.