TABLE 2.
Geometric mean MICs of fluoroquinolone agents for anaerobic bacteria
| Organism (no. of strains) | MIC (μg/ml) of:
|
||
|---|---|---|---|
| Levofloxacin | Ofloxacin | Ciprofloxacin | |
| B. fragilis (6) | 1.1 | 2 | 3.2 |
| Other B. fragilis group species (6) | 2.2 | 4.5 | 9 |
| Other Bacteroides species (10) | 0.7 | 1.4 | 0.98 |
| Clostridium species (9) | 1 | 1.5 | 1.4 |
| F. nucleatum (18) | 0.86 | 1.7 | 1.8 |
| Peptostreptococcus species (37) | 0.69 | 1.3 | 0.96 |
| Gram-positive (non-spore-forming) rods (35) | 0.69 | 1.7 | 1.5 |
| Prevotella species (43) | 1 | 1.9 | 1.7 |
| Veillonella species (10) | 0.4 | 0.76 | 0.18 |