| Microorganism |
MIC50
(μg/ml) |
MIC90
(μg/ml) |
Range
(μg/ml) |
Antimicrobial |
Reference |
| Haemophilus influenzae |
4 |
16 |
2 － 32 |
Clarithromycin (Biaxin)  |
15 |
| Haemophilus influenzae |
4 |
32 |
<0.25 － >32 |
Cefaclor (Ceclor, Ceclor CD) |
85 |
| Haemophilus influenzae |
4 |
64 |
0.125 － >64 |
Amoxicillin (Novamox, Amoxil) |
769 |
| Haemophilus influenzae |
4 |
64 |
0.25 － 128 |
Ampicillin (Omnipen) |
1491 |
| Haemophilus influenzae |
5 |
2 |
≤0.25 － >4 |
Cefuroxime (Kefurox, Zinacef) |
499 |
| Haemophilus influenzae |
6 |
16 |
? － ? |
Clarithromycin (Biaxin) |
403 |
| Haemophilus influenzae |
6 |
32 |
? － ? |
Cefprozil (Cefzil) |
403 |
| Haemophilus influenzae |
8 |
8 |
<0.01 － 64 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
948 |
| Haemophilus influenzae |
8 |
16 |
0.008 － >=64 |
Clarithromycin (Biaxin) |
950 |
| Haemophilus influenzae |
8 |
16 |
0.03 － 16 |
Cefazolin (Ancef, Kefzol, Zolicef) |
1438 |
| Haemophilus influenzae |
8 |
16 |
0.03 － >128 |
Clarithromycin (Biaxin) |
1113 |
| Haemophilus influenzae |
8 |
16 |
<0.05 － 128 |
Clarithromycin (Biaxin) |
948 |
| Haemophilus influenzae |
8 |
16 |
0.25 － 32 |
Clarithromycin (Biaxin) |
125 |
| Haemophilus influenzae |
8 |
16 |
≤0.25 － >32 |
Clarithromycin (Biaxin) |
500 |
| Haemophilus influenzae |
8 |
16 |
<0.25 － >32 |
Clarithromycin (Biaxin) |
85 |
| Haemophilus influenzae |
8 |
16 |
0.25 － >32 |
Roxithromycin |
499 |
| Haemophilus influenzae |
>8 |
>16 |
0.5 － >16 |
BB-83698 |
83 |
| Haemophilus influenzae |
>8 |
>16 |
0.5 － >16 |
BB-83815 |
83 |
| Haemophilus influenzae |
>8 |
>16 |
0.5 － >16 |
BB-83857 |
83 |
| Haemophilus influenzae |
>8 |
>16 |
0.5 － >16 |
BB-84416 |
83 |
| Haemophilus influenzae |
8 |
16 |
≤0.5 － >64 |
Clarithromycin (Biaxin) |
499 |
| Haemophilus influenzae |
>8 |
>16 |
2 － >16 |
Cefaclor (Ceclor, Ceclor CD) |
120 |
| Haemophilus influenzae |
8 |
16 |
2 － >16 |
Fusidic acid (Fucidin) |
120 |
| Haemophilus influenzae |
8 |
16 |
2 － 64 |
Cefaclor (Ceclor, Ceclor CD) |
274 |
| Haemophilus influenzae |
8 |
16 |
4 － 16 |
Cefazolin (Ancef, Kefzol, Zolicef) |
248 |
| Haemophilus influenzae |
8 |
16 |
4 － 32 |
Clarithromycin (Biaxin) |
1113 |
| Haemophilus influenzae |
>16 |
>16 |
0.12 － >16 |
Ampicillin (Omnipen) |
1279 |
| Haemophilus influenzae |
16 |
16 |
0.25 － 32 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
125 |