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Table 3 Multiple resistance of MDR-Mtb isolates of 2009 to FQs (n = 52)a

From: Persistently high prevalence of primary resistance and multidrug resistance of tuberculosis in Heilongjiang Province, China

Category MIC < 2 mg/L MIC ≥ 2 mg/L
No. % No. %
Lfx + Mfx 29 55.8 11 21.2
Lfx + Mfx + Gfx 24 46.2 8 15.4
Lfx + Mfx + Gmx 27 51.9 9 17.3
Lfx + Mfx + Sfx 26 50.0 8 15.4
Lfx + Mfx + Sfx + Gmx 25 48.1 8 15.4
Lfx + Mfx + Gfx + Gmx 24 46.2 7 13.5
Lfx + Mfx + Gfx + Sfx 24 46.2 7 13.5
Lfx + Mfx + Gfx + Sfx + Gmx 24 46.2 7 13.5
  1. a MDR multidrug resistance, Mtb M. tuberculosis, FQs fluoroquinolones, MIC minimum inhibitory concentration, Lfx levofloxacin, Sfx sparfloxacin, Mfx moxifloxacin, Gmx gemifloxacin, Gfx gatifloxacin