The in vitro susceptibility of methicillin-resistant Staphylococcus aureus to eight fluoroquinolones, norfloxacin, ofloxacin, enoxacin, ciprofloxacin, lomefloxacin, sparfloxacin and nadifloxacin, was evaluated. Methicillin-resistant S. aureus strains were isolated from 64 cutaneous infections from 1991 to 1993. Nadifloxacin exhibited the lowest MIC among all of the fluoroquinolones. In addition, there was no resistance to nadifloxacin. The MIC50 of these drugs has been increasing in the past 3 years.
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