Table 2.

Antibiotic Susceptibility of Corynebacteria (n = 20)

Isolate	MIC GM (μg/mL)	MIC PcG (μg/mL) (S≤0.125 R>0.125)	MIC RIF (μg/mL) (S≤0.06 R>0.5)	MIC VAN (μg/mL) (S≤ 2 R>2)
Corynebacterium striatum	0.032	1 a	>32	1
C striatum	0.032	16	>32	1
C striatum	≤0.016	1	≤0.002	1
C striatum	2	0.125	≤0.002	0.5
C striatum	≤0.016	0.5	≤0.002	1
C striatum	16	8	>32	1
C striatum	0.032	>32	>32	1
C striatum	0.5	1	≤0.002	1
Corynebacterium jeikeium	0.5	>32	≤0.002	2
C jeikeium*	0.064	>32	0.008	1
C jeikeium	0.125	>32	≤0.002	1
C jeikeium	0.125	>32	≤0.002	2
Corynebacterium amycolatum	0.25	0.5	≤0.002	1
C amycolatum	0.5	0.125	≤0.002	1
C amycolatum	0.125	0.5	≤0.002	1
Corynebacterium pseudodiphtheriticum**	0.032	0.004	≤0.002	0.5
C pseudodiphtheriticum	≤0.016	0.008	≤0.002	0.5
Corynebacterium coyleae	0.5	2	0.004	0.5
Corynebacterium propinquum**	0.032	0.004	≤0.002	0.5
Corynebacterium simulans	≤0.016	0.125	≤0.002	1

Abbreviations: GM, gentamicin; MIC, minimal inhibitory concentration; PcG, penicillin; RIF, rifampicin; S and R, refer to Eucast breakpoints, no Eucast breakpoints available for gentamicin; VAN, vancomycin.

^aValues in bold are, according to Eucast breakpoints, resistant to tested antibiotic. All isolates were read after 16–20 hours incubation with exceptions;

*, Growth was recorded at 90 hours.

**, Plates were read after 40–44 hours.