TABLE 4.
Antimicrobial susceptibilities of seven strains of E. persicinus by broth microdilution
| Antimicrobial agent | MIC (μg/ml)a
|
|
|---|---|---|
| 50% | 90% | |
| Ampicillin | ≥64 | ≥64 |
| Piperacillin | 32 | ≥32 |
| Ticarcillin | ≥128 | ≥128 |
| Amoxicillin-clavulanic acid | 4 | 4 |
| Cefazolin | ≥32 | ≥32 |
| Cefotaxime | 1 | 1 |
| Cefotetan | 1 | 1 |
| Cefpodoxime | 2 | 4 |
| Ceftriaxone | 1 | 4 |
| Ceftazidime | 2 | 2 |
| Cefuroxime | 8 | 16 |
| Imipenem | 1 | 1 |
| Aztreonam | 1 | 2 |
| Gentamicin | ≤0.25 | ≤0.25 |
| Tobramycin | ≤0.25 | ≤0.25 |
| Amikacin | 1 | 1 |
| Ciprofloxacin | ≤0.06 | ≤0.06 |
| Ofloxacin | ≤0.25 | ≤0.25 |
| Chloramphenicol | 2 | 4 |
| Nalidixic acid | 1 | 4 |
| Sulfisoxazole | >32 | >32 |
| Tetracycline | ≤0.5 | 1 |
| Trimethoprim-sulfamethoxazole | ≤0.12/2.4 | ≤0.12/2.4 |
a
50% and 90%, MICs at which 50 and 90% of strains are inhibited, respectively.