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Microorganism MIC50sort
(μg/ml)		 MIC90sort
(μg/ml)		 Rangesort
(μg/ml)		 Reference
Bacteroides fragilis 0.12 2 0.12 － 2 268
Chlamydia trachomatis - - 0.063 － ? 263
Citrobacter spp. 0.5 8 0.015 － 8 268
Clostridium difficile 2 4 0.25 － 64 268
Enterobacter spp. 0.06 2 0.015 － 32 268
Enterococcus faecalis 0.25 4 0.12 － 8 268
Enterococcus faecium 4 8 0.06 － 32 268
Escherichia coli 0.03 4 0.015 － 32 268
Haemophilus influenzae (ampicillin-susceptible) 0.008 0.015 ≤0.004 － 0.12 268
Haemophilus influenzae (ESBL + ampicillin-resistant) 0.008 0.015 ≤0.004 － 0.25 268
Haemophilus influenzae (ESBL + ampicillin-resistant) - - 0.008 － ? 268
Haemophilus influenzae (ESBL) - - 0.015 － ? 268
Haemophilus influenzae (non-ESBL + ampicillin-resistant) 0.008 0.015 ≤0.004 － 0.015 268
Haemophilus influenzae (non-ESBL) - - 0.008 － ? 268
Klebsiella pneumonia 0.12 0.25 0.06 － 16 268
Legionella pneumophila 0.015 0.03 0.015 － 0.06 268
Moraxella catarrhalis 0.03 0.06 0.015 － 1 268
Mycoplasma pneumonia - - 0.12 － ? 268
Peptostreptococcus spp. 0.12 0.5 0.03 － 4 268
Proteus (indole-positive) 0.5 8 0.03 － 32 268
Proteus mirabilis 0.25 4 0.12 － 128 268
Pseudomonas aeruginosa (from respiratory tract infection + quinolone-susceptible) 1 4 0.06 － 8 268
Pseudomonas aeruginosa (from urinary tract infection + quinolone-susceptible) 1 4 0.5 － 8 268
Salmonella spp. 0.06 0.12 0.03 － 1 268
Serratia marcescens 0.5 4 0.12 － 128 268
Staphylococci (coagulase-negative + methicillin-resistant) 0.25 0.5 0.03 － 8 268
Staphylococci (coagulase-negative + methicillin-susceptible) 0.03 0.5 0.12 － 1 268
Staphylococcus aureus (methicillin-resistant + quinolone-resistant) 1 8 0.25 － 16 268