Emergence of high-level fluoroquinolone resistance in **emm**6 **Streptococcus pyogenes** and **in vitro** resistance selection with ciprofloxacin, levofloxacin and moxifloxacin University of Antwerp
Objectives: To investigate the prevalence of fluoroquinolone resistance in Streptococcus pyogenes and its in vitro selection by ciprofloxacin and the respiratory fluoroquinolones, levofloxacin and moxifloxacin. Methods: S. pyogenes (n = 5851) recovered from pharyngitis and invasive infections during 200306 in Belgium were screened for fluoroquinolone non-susceptibility (ciprofloxacin MIC 2 mg/L) and further studied for mutations in the ...