TABLE 3.
MIC values of 12 commonly used antibiotics against gram-positive bacteriaa and test for β-lactamase production
| Strain | MIC (μg/ml) of:
|
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TX | EM | FX | CT | PG | LE | LZ | CI | TC | CM | VA | TS | β-lactamase | |
| CN-1 | 2 | 0.016 | 1 | 1 | 0.25 | 0.125 | 1 | 0.125 | 1.5 | 1.5 | 0.5 | 0.75 | Negative |
| CN-2 | 1.5 | 0.75 | 3 | 1 | 0.25 | 0.19 | 0.75 | 0.25 | 32 | >256 | 0.38 | 0.032 | Negative |
| CN-3415 | 2 | 1.5 | 1.5 | 1 | 0.38 | 0.94 | 0.75 | 0.064 | 48 | 2 | 0.5 | 0.5 | Negative |
| NML 91-0032 | 0.75 | <0.016 | 0.75 | 0.75 | 0.094 | 0.094 | 0.75 | 0.094 | 0.5 | 0.38 | 0.75 | 0.75 | Negative |
| NML 92-0360 | 1.5 | <0.016 | 0.25 | 0.75 | 0.064 | 0.19 | 0.75 | 0.094 | 1 | 2 | 0.75 | 0.75 | Negative |
a
Abbreviations: TX, ceftriaxone; EM, erythromycin; FX, cefoxitin; CT, cefotaxime; PG, penicillin; LE, levofloxacin; LZ, linezolid; CI, ciprofloxacin; TC, tetracycline; CM, clindamycin; VA, vancomycin; TS, sulfamethoxazole trimethoprim.