Table 3.

Susceptibility of E. faecium MK-SQ-1 to antibiotics

Antibiotics	Dosage per disc (μg)	Criterion for R (mm)	Criterion for I (mm)	Criterion for S (mm)	Inhibition zone (mm)*	Result
Amoxicillin–clavulanate potassium	20/10	≤ 13	13–18	≥ 18	25 ± 0.15	S
Ampicillin	10	≤ 16	–	≥ 17	23 ± 0.15	S
Polymyxin B	300	≤ 8	8–12	≥ 12	7 ± 0.10	R
Furadantin	300	≤ 14	14–17	≥ 17	24 ± 0.20	S
Lincomycin	2	≤ 14	14–21	≥ 21	20 ± 0.05	I
Phosphonomycin	200	≤ 12	13–18	≥ 19	24 ± 0.12	S
Chloromycetin	30	≤ 12	12–18	≥ 18	19 ± 0.10	S
Norfloxacin	10	≤ 12	12–16	≥ 16	12 ± 0.03	R
Doxycycline	30	≤ 18	18–22	≥ 22	8 ± 0.05	R
Gentamycin	10	≤ 12	12–15	≥ 15	10 ± 0.06	R
Tetracycline	30	≤ 14	14–19	≥ 19	9 ± 0.10	R
Cefalexin	30	≤ 14	14–17	≥ 17	18 ± 0.15	S
Cefaclor	30	≤ 14	14–18	≥ 18	18 ± 0.11	S
Cefradine	30	≤ 14	14–19	≥ 19	16 ± 0.05	I
Cefoperazone	75	≤ 15	15–21	≥ 21	16 ± 0.12	I
Cefalotin	30	≤ 14	14–18	≥ 18	9 ± 0.11	R
Cefotaxime	30	≤ 16	16–22	≥ 22	8 ± 0.03	R
Vancomycin	30	≤ 14	14–18	≥ 18	19 ± 0.13	S
Neomycin	30	≤ 17	17–23	≥ 23	11 ± 0.08	R
Levofloxacin	5	≤ 13	13–17	≥ 17	14 ± 0.10	I

S, sensitive; I, intermediate sensitive; R, resistant. *Values are given as mean ± standard deviation (SD) from triplicate experiments