TABLE 2.
Median MICs for various antibiotics in the presence of subinhibitory vancomycin levels
| Strain or antibiotic | MIC (µg/ml)a |
||||
|---|---|---|---|---|---|
| No Van | + Van (0.25 μg/ml) | + Van (0.5 μg/ml) | + Van (1 μg/ml) | + Van (2 μg/ml) | |
| V583 | |||||
| Ceftriaxone | 512 | 8 | 2 | 1 | 0.5 |
| Ceftazidime | 1,024 | 32 | 16 | 4 | 2 |
| Chloramphenicol | 8 | 8 | 8 | 8 | 8 |
| HIP11704 | |||||
| Ceftriaxone | 512 | ND | ND | ND | 2 |
| OG1 | |||||
| Ceftriaxone | 32 | 128 | 256 | ND | ND |
a
MICs were determined in MHB after 24 h at 37°C from a minimum of 3 independent experiments. Vancomycin (Van) MICs were as follows: for V583, 16; for HIP11704, 512; and for OG1, 2. ND, not determined.