Table 3.
Class | Antibiotics | MIC (μg/mL) | Fold increase in MIC (stress/normal) | |
---|---|---|---|---|
Normal ST692 | Stressed ST692 | |||
β-Lactams | Ampicillin | 256 | 1024 | 4 |
Amoxicillin | 256 | 1024 | 4 | |
Cefalexin | 32 | 64 | 2 | |
Cefazolin | 32 | 64 | 2 | |
Cefoperazone | 64 | 128 | 2 | |
Cefotaxime | 32 | 32 | 1 | |
Cloxacillin | < 0.5 | 1 | –a | |
Imipenem | > 1024 | > 1024 | –a | |
Methicillin | 32 | 32 | 1 | |
Chloramphenicol | Chloramphenicol | 16 | 16 | 1 |
Aminoglycosides | Gentamicin | 4 | 4 | 1 |
Kanamycin | 32 | 32 | 1 | |
Streptomycin | > 1024 | > 1024 | –a | |
Tetracyclines | Tetracycline | 64 | 64 | 1 |
MIC minimum inhibitory concentration.
aIndicates not exactly known because the range of MIC is greater than the maximum value or less than a minimum value.