Escherichia coli producing constitutive AmpC. ESBL-negative, carbapenemase-negative.
| FOX | Cefoxitin | COX | Cefotaxime | GMN | Gentamicin | MEM | Meropenem |
| AKN | Amikacin | PTZ | Piperacillin/tazobactam | TGC | Tigecycline | ||
Escherichia coli producing constitutive AmpC. ESBL-negative, carbapenemase-negative.