Table 2. Minimal inhibitory concentrations and resistance rates of canine and feline Enterococcus faecium isolates.

Antimicrobial agents	Number of Enterococcal faecium corresponding to MIC (mg/L)											No. of resistant isolates (%)
	0.064	0.125	0.25	0.5	1	2	4	8	16	32	64
Note: The gray-shaded areas indicate untested antimicrobial concentrations. For isolates showing no growth at any concentration, the lowest MIC value was assigned. For isolates exhibiting growth at all tested concentrations, the next higher MIC value above the highest tested concentration was assigned (black numbers on gray background). MIC values for amoxicillin-clavulanic acid (2:1) are reported as amoxicillin MIC values. Color coding indicates susceptibility categories: susceptible (green), intermediate (yellow), and resistant (red). Abbreviation: MIC=minimum inhibitory concentration.
Amoxicillin-clavulanate (2:1)			2	8	5	1	4	2	2	142		144 (86.75)
Doxycycline		12	16	1	1	2	−	−	39	95		134 (80.72）
Azithromycin			1	1	−	−	3	10	10	141		−
Florfenicol					1	14	94	38	2	4	13	−
Enrofloxacin		−	−	−	5	6	3	6	146			−
Rifampin			22	1	3	12	45	58	25			128 (77.11)
Vancomycin				24	117	13	11	1	−	−	−	0 (0)
Linezolid				−	19	118	21	3	5			8 (4.82)
Daptomycin				9	15	60	69	8	5			13 (1.81)