In Vitro Activities of a New Des-Fluoroquinolone, BMS 284756, and Seven Other Antimicrobial Agents against 151 Isolates of Eikenella corrodens

The des-fluoroquinolone BMS 284756 was active in vitro against all 151 clinical strains of Eikenella corrodens at a MIC of ≤0.25 μg/ml and was comparable in activity to moxifloxacin and levofloxacin. The MIC at which 90% of the isolates were inhibited by penicillin G was 2 μg/ml; MICs for 8.6% of the strains (13 of 151) were ≥4 μg/ml, including for two beta-lactamase-producing isolates. Amoxicillin-clavulanate and ampicillin-sulbactam inhibited all strains at a MIC of ≤1 μg/ml.