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| β-Lactamases | NO. (%) Isolates | Ceftazidime a | Imipenem a |
|---|---|---|---|
| AmpC alone | 10 (19.6) | ≥ 256 (1/10) | 16-64 (0/10) |
| AmpC + ESBL b | 2 (3.9) | > 256 (0/2) | 64 (0/2) |
| AmpC + MBL c | 13 (25.5) | > 256 (1/13) | 16-64 (0/13) |
| AmpC + ESBL + MBL | 6 (11.8) | 32 to ≥ 256 (0/6) | 16-64 (0/6) |
a MIC (µg/mL) (NO. Susceptible) (MIC, Minimum Inhibitory Concentration)
b Extended-Spectrum β-Lactamase
c Metallo-β-Lactamase
