TABLE 1.
Phenotypic and genotypic antimicrobial susceptibility profile
| Antimicrobial | MIC breakpoint (mg/liter) | Resistance interpretive categorya | Resistance gene |
|---|---|---|---|
| Ampicillin-sulbactam | 16/8 | R | cepA |
| Amoxicillin-clavulanic acid | 4/2 | S | |
| Cefotetan Na | ≤4 | S | |
| Penicillin | ≥4 | R | |
| Imipenem | ≤0.12 | S | |
| Meropenem | ≤0.5 | S | |
| Clindamycin | ≥8 | R | ermF |
| Cefoxitin | 4 | S | |
| Metronidazole | ≥16 | R | nimL |
| Chloramphenicol | ≥64 | R | Chloramphenicol-acetyltransferase |
| Ampicillin | ≥16 | R | |
| Piperacillin | 128 | R | |
| Tetracycline | ≥8 | R | tetQ |
| Mezlocillin | 128 | NA | |
| Piperacillin-tazobactam | 2/4 | S |
a
The results were interpreted using CLSI M100, 29th ed. (7). R, resistant; S, susceptible; NA, CLSI breakpoints were not available.