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Microorganism MIC50
(μg/ml)		 MIC90
(μg/ml)		 Range
(μg/ml)		 Antimicrobial Reference
Streptococcus pneumonia (penicillin-susceptible) <0.03 <0.03 <0.03 － >64 Clarithromycin (Biaxin) 45
Streptococcus pneumonia (penicillin-susceptible) ≤0.03 ≤0.03 ≤0.03 － >64 Clarithromycin (Biaxin) 195
Streptococcus pneumonia (penicillin-susceptible) 0.03 0.12 0.008 － >128 Clarithromycin (Biaxin) 1113
Streptococcus pneumonia (penicillin-susceptible) <0.12 <0.12 0.008 － >64 Clarithromycin (Biaxin) 948
Streptococcus pneumonia (penicillin-susceptible) ≤0.12 ≤0.12 ≤0.12 － >16 Clarithromycin (Biaxin) 499
Streptococcus pneumonia (penicillin-susceptible) >32 >32 0.008 － >32 Clarithromycin (Biaxin) 268
Streptococcus pneumonia (penicillin-susceptible) >=- ≥1 ? － ? Clarithromycin (Biaxin) 1044