Table 1.
The minimal inhibitory concentration (MIC) of selected antibiotics against an Enterococcus sp. clinical isolate determined after 20 and 48 h of exposure.
| Antibiotic | MIC [μg ml-1] 20 h |
MIC [μg ml-1] 48 h |
|---|---|---|
| Ampicillin | ≤0.5 | ≤0.5 |
| Cefoxitin | ≤2 | 8 |
| Daptomycin | ≤0.5 | 1 |
| Fosfomycin | ≤8 | 16 |
| Fusidic acid | ≤1 | 4 |
| Gentamicin | 2 | 2 |
| Linezolid | ≤1 | ≤1 |
| Moxifloxacin | ≤0.25 | 0.5 |
| Oxacillin | ≤0.25 | ≤0.25 |
| Penicillin G | ≤0.125 | ≤0.125 |
| Rifampicin | ≤1 | ≤ 1 |
| Synercid | ≤0.5 | ≤0.5 |
| Teicoplanin | ≤0.125 | ≤0.125 |
| Tigecycline | ≤0.125 | ≤0.125 |
| Vancomycin | ≤0.25 | 0.5 |
Due to the limited clinical applicability of some antibiotics [e.g., restricted efficacy of cephalosporins for Enterococcus infections, intrinsic resistance to fusidic acid, Clinical and Laboratory Standards Institute [CLSI], 2013)] and because we did not follow the guideline incubation time for utilizing MIC interpretative standards for Enterococcus spp. in case of 48 h of incubation, MIC values are reported without an accompanying S, I, or R categorization.