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. 2025 Jan 17;7(3):77–83. doi: 10.46234/ccdcw2025.017

Table 1. Minimal inhibitory concentrations and resistance rates of canine and feline Enterococcus faecalis isolates.

Antimicrobial agents Number of Enterococcal faecalis 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) 6 22 126 16 3 2 2 (1.14)
Doxycycline 12 8 4 2 1 4 44 76 24 100 (57.14)
Azithromycin 1 3 14 30 8 119
Florfenicol 6 42 93 20 14
Enrofloxacin 1 32 91 12 1 38
Rifampin 6 4 18 36 54 49 8 111 (63.43)
Vancomycin 2 121 49 3 0 (0)
Linezolid 4 40 111 9 11 11 (6.29)
Daptomycin 27 74 52 20 1 1 2 (1.14)