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Table 1 Minimal inhibitory concentrations (MICs) to macrolides for Mycoplasma pneumoniae strains

From: Radiologic findings as a determinant and no effect of macrolide resistance on clinical course of Mycoplasma pneumoniae pneumonia

Macrolides MICs (μg/mL) for strains
With 23S rRNA transition (n = 36) Without 23S rRNA transition (n = 23)
Range MIC50 MIC90 Range MIC50 MIC90
Azithromycin 1 ~ 64 8 16 0.001 ~ 0.001 0.001 0.001
Clarithromycin 8~ > 128 64 128 0.001 ~ 0.002 0.001 0.002
Erythromycin 2~ > 128 16 128 0.001 ~ 0.004 0.001 0.002
Roxithromycin 0.032 ~ 128 8 32 0.001 ~ 0.008 0.001 0.004
  1. MIC50 and MIC90 are MICs at which 50% and 90% of the isolates were inhibited by the antimicrobials, respectively