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Table 2 MBC values of H. influenzae strains

From: In vitro activity of telithromycin against Haemophilus influenzae at epithelial lining fluid concentrations

Microorganisms Drug Ambient air CO2
   Range (mg/L) MBC50/MBC90 (mg/L) Range (mg/L) MBC 50 /MBC 90 (mg/L)
β-lactamase negative (n = 200) Tel § 0.125 – 16 1/4 0.06 – 32 4/16
  Clr 0.25 – 64 4/16 1 – 128 8/64
  Azm 0.25 – 8 1/4 0.5 – 64 4/8
β-lactamase positive (n = 50) Tel 0.125 – 8 1/4 0.125 – 16 4/16
  Clr 0.5 – 32 4/16 1 – 64 8/64
  Azm 0.25 – 8 1/4 0.5 – 32 4/8
BLNAR* (n = 10) Tel 0.125 – 8 1/8 0.25 – 8 4/8
  Clr 1 – 16 4/16 2 – 32 8/32
  Azm 0.25 – 8 1/8 0.5 – 16 4/16
  1. *: BLNAR: β-lactamase negative ampicillin resistant; §: Tel: telithromycin; Clr: Clarithromycin; Azm: Azithromycin.