Antimicrobial Agents and Chemotherapy, March 2001, p. 938-942, Vol. 45, No. 3
0066-4804/01/$04.00+0 DOI: 10.1128/AAC.45.3.938-942.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Institute for Medical Microbiology and Virology, Heinrich-Heine Universität Düsseldorf, Düsseldorf,1 and Institute of Pharmaceutical Microbiology, University of Bonn, Bonn,2 Germany, and Eijkman-Winkler Institute for Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands3
Received 24 July 2000/Returned for modification 11 September 2000/Accepted 27 November 2000
Streptococcus pneumoniae, Streptococcus pyogenes, and Staphylococcus aureus isolates were exposed to subinhibitory MICs of ciprofloxacin, sparfloxacin, gatifloxacin, moxifloxacin, clinafloxacin, and gemifloxacin during a 10-day period. Subculturing led to resistance development, regardless of the initial potencies of the quinolones. None of the quinolones was associated with a significantly slower rate of resistance development.
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