Table 1. Antimicrobial activity of antimicrobial agents against the 118 tested clinical Stenotrophomonas maltophilia complex isolates.
| Agent | MIC (µg/mL) | Number of isolates (%) | ||
|---|---|---|---|---|
| MIC50 | MIC90 | Susceptible | Resistant | |
| Ceftazidime | 8 | 64 | 70 (59.3) | 33 (28.0) |
| Levofloxacin | 2 | 16 | 61 (51.7) | 36 (30.5) |
| TMP/SMX | 2/38 | 32/608 | 82 (69.5)a | 36 (30.5)a |
| 65 (55.1) | 53 (44.9) | |||
| TZP | 16/4 | 128/4 | 84 (71.2) | 13 (11.0) |
| Tigecycline | 2 | 8 | 83 (70.3) | 14 (11.9) |
| MDR | 38 (32.2) | |||
aResults from standard agar dilution methods
MIC, minimum inhibitory concentration; TMP/SMX, trimethoprim-sulfamethoxazole; TZP, piperacillin/tazobactam; MDR, multidrug resistance