TABLE 1.
Antibiotic MICs against E. coli XL-1/pBC/KPC-53 compared to that of E. coli XL-1/pBC/KPC-3
| β-Lactama | MIC (mg/L) against E. coli XL-1 (5 × 105 CFU/mL) |
||
|---|---|---|---|
| XL-1/pBC/KPC-53 | XL-1/pBC/KPC-3 | XL-1/pBC-SK | |
| PIP | 8 | 256 | 0.25 |
| TZP | 2 | 64 | 0.25 |
| AMX | 8 | 64 | 0.25 |
| AMC | 4 | 16 | 0.25 |
| CAZ | 16 | 128 | <0.06 |
| CZA | 4 | 1 | <0.06 |
| IPM | 0.25 | 0.25 | <0.06 |
| MEM | 0.125 | 0.125 | <0.06 |
a
PIP, piperacillin; TZP, piperacillin-tazobactam; AMX, amoxicillin; AMC, amoxicillin-clavulanic acid; CAZ, ceftazidime; CZA, ceftazidime-avibactam; IPM, imipenem; MEM, meropenem.