Haemophilus influenzae (ampicillin-susceptible) and Ampicillin (Omnipen)
Concentration
(μg/ml)
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Ampicillin (Omnipen)
1
0.25
Ampicillin (Omnipen)
1
0.25
Ampicillin (Omnipen)
0.6
0.3
Ampicillin (Omnipen)
1
0.5
1
2
3
4
MIC50
MIC90
Strain Number