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Percentage of resistance of clinical Pseudomonas isolates to different quinolones
| Antimicrobial agent | MIC Range | MIC50 | MIC90 | No. of resistant isolates (%) |
|---|---|---|---|---|
| µg/ml | µg/ml | |||
| Nalidixic acid | 16:>1024 | >1024 | >1024 | 38 (41.3) |
| Ciprofloxacin | ≤0.5:128 | >16 | >64 | 33 (35.9) |
| Norfloxacin | ≤0.5:>1024 | >16 | >64 | 34 (37.0) |
| Ofloxacin | ≤0.5:512 | >64 | >128 | 34 (37.0) |
| Gemifloxacin | ≤0.5:256 | >32 | >64 | 26 (28.3) |
| Levofloxacin | ≤0.5:256 | >32 | >64 | 33 (35.9) |
| Moxifloxacin | 1:512 | >64 | >64 | 36 (39.1) |
