novel gyrase mutations and characterization of ciprofloxacin-resistant clinical strains of enterococcus faecalis isolated in poland. | the activity of ciprofloxacin, sparfloxacin and moxifloxacin was determined for 205 enterococcus faecalis isolates from patients of five hospitals (warsaw, poland; collected from 2000 to 2002). ciprofloxacin resistant and intermediate isolates were numerous (53.7%). among them, highly resistant (mic > or = 16 mg/l) isolates predominated (98%). isolates resistant to ciprofloxacin were also resistant to sparfloxacin and moxifloxacin. the parc and gyra qrdrs (quinolone-resistance-determining region ... | 2008 | 18646399 |