TABLE 1.

Antibiotic susceptibilities of 113 GBS strains

AntibioticMIC50a (μg/ml)MIC90 (μg/ml)MIC range
Penicillin0.0320.064<0.032-0.064
EM0.0322560.016->256
CM0.0162560.016->256
TC32640.064-256
MN16320.064-64
Gentamicin8168-16
KM323216->1,024
SM323216->1,024
Rifampin0.250.50.125-1
Vancomycin0.250.50.25-0.5
  • a MIC50, MIC for 50% of the strains tested.