Table 2.

In vitro activities of seven fluoroquinolone agents against sporadic and epidemic A. baumannii isolates

A. baumannii (no. of strains tested)AntibioticMIC (mg/liter)% of strains fully susceptible
Range50%90%Geometric mean
Sporadic isolates (109)Ciprofloxacin≤0.03—>1280.256413.576.1
Clinafloxacin0.06—160.1220.886.2
Gatifloxacin≤0.03—640.1282.280.7
Gemifloxacin≤0.03—320.1281.980.7
Levofloxacin≤0.03—320.2582.283.5
Moxifloxacin≤0.03—640.1283.283.5
Trovafloxacin≤0.03—320.0682.085.3
Outbreak isolates (31)Ciprofloxacin0.25—>128412841.232.3
Clinafloxacin0.12—32142.954.8
Gatifloxacin≤0.03—1282169.138.7
Gemifloxacin0.06—322327.541.9
Levofloxacin0.12—324166.641.9
Moxifloxacin0.06—322328.038.7
Trovafloxacin≤0.03—321327.651.6