Table 2. Antimicrobial drug susceptibility of clinical bacterial strains from 5 patients who tested positive for Clostridium butyricum in a single-institute, retrospective study, Osaka University Hospital, Japan, and 3 medicinal strains from different lot numbers of C. butyricum MIYAIRI 588 strain.

Category	Patient strains						Medicinal strains of CBM 588
Patient no.	1	2	3	4	5
Strain no.	114–4	129–32	180–11	181–16	216–41		No. 1	No. 2	No. 3
Antimicrobial drug
Penicillin	0.25	0.25	0.5	0.5	0.25		0.25	0.25	0.25
Ampicillin	0.25	0.25	0.25	0.25	0.25		0.12	0.25	0.25
Cefotaxime	32	32	32	32	32		32	32	32
Ceftriaxone	8	8	16	8	16		8	16	8
Cefmetazole	≤4	≤4	8	≤4	≤4		≤4	≤4	≤4
Imipenem	1	1	2	1	1		1	1	1
Meropenem	≤0.12	≤0.12	0.5	≤0.12	≤0.12		≤0.12	≤0.12	≤0.12
Sulbactam/ampicillin	≤2	≤2	≤2	≤2	≤2		≤2	≤2	≤2
Clavulanic acid/amoxicillin	0.25	0.25	0.5	0.25	0.25		0.12	0.25	0.12
Tazobactam/piperacillin	≤8	≤8	≤8	≤8	≤8		≤8	≤8	≤8
Clindamycin	0.5	0.25	0.5	0.5	0.25		0.25	0.5	0.25
Moxifloxacin	≤0.5	≤0.5	≤0.5	≤0.5	≤0.5		≤0.5	≤0.5	≤0.5
Metronidazole	≤2	≤2	≤2	≤2	≤2		≤2	≤2	≤2