| Microorganism |
MIC50
(μg/ml) |
MIC90
(μg/ml) |
Range
(μg/ml) |
Antimicrobial |
Reference |
| Streptococcus pyogenes (mef(A)) |
4 |
8 |
0.015 － >32 |
Clarithromycin (Biaxin)  |
1113 |
| Streptococcus pyogenes (mef(A)) |
4 |
8 |
1 － 8 |
Clarithromycin (Biaxin) |
502 |
| Streptococcus pyogenes (mef(A)) |
4 |
8 |
1 － 8 |
Spiramycin |
502 |
| Streptococcus pyogenes (mef(A)) |
4 |
8 |
1 － 16 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
1111 |
| Streptococcus pyogenes (mef(A)) |
4 |
16 |
2 － 16 |
Clarithromycin (Biaxin) |
15 |
| Streptococcus pyogenes (mef(A)) |
8 |
8 |
1 － 16 |
Clarithromycin (Biaxin) |
1113 |
| Streptococcus pyogenes (mef(A)) |
8 |
8 |
2 － 8 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
15 |
| Streptococcus pyogenes (mef(A)) |
8 |
8 |
2 － 16 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
1113 |
| Streptococcus pyogenes (mef(A)) |
8 |
8 |
4 － 16 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
502 |
| Streptococcus pyogenes (mef(A)) |
8 |
16 |
0.03 － 64 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
954 |
| Streptococcus pyogenes (mef(A)) |
8 |
16 |
0.03 － 64 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
1113 |
| Streptococcus pyogenes (mef(A)) |
8 |
16 |
0.06 － 64 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
1113 |
| Streptococcus pyogenes (mef(A)) |
8 |
16 |
1 － 32 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
950 |
| Streptococcus pyogenes (mef(A)) |
8 |
16 |
2 － 16 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
15 |
| Streptococcus pyogenes (mef(A)) |
8 |
16 |
2 － 32 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
1113 |
| Streptococcus pyogenes (mef(A)) |
40 |
8 |
1 － 16 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
502 |
| Streptococcus pyogenes (mef(A)) |
- |
- |
4 － 8 |
Clarithromycin (Biaxin) |
52 |
| Streptococcus pyogenes (mef(A)) |
- |
- |
4 － 8 |
Erythromycin A |
52 |
| Streptococcus pyogenes (mef(A)) |
- |
- |
4 － 16 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
52 |
| Streptococcus pyogenes (mef(A)) |
- |
- |
8 － 32 |
Roxithromycin |
52 |
| Streptococcus pyogenes (mef(A)) |
- |
- |
? － 0.12 |
Clindamycin (Cleocin) |
52 |
| Streptococcus pyogenes (NY-5) |
- |
- |
0.2 － ? |
Carbenicillin (Pyopen, Geogen, Geocillin) |
616 |
| Streptococcus pyogenes (NY-5) |
- |
- |
3.13 － ? |
SCE-129 |
616 |
| Streptococcus pyogenes (OMNFI BI) |
- |
- |
0.5 － ? |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay) |
451 |
| Streptococcus pyogenes (penicillin-resistant) |
0.005 |
0.15 |
? － ? |
Telithromycin (HMR 3647, RU-66647, Ketek) |
58 |
| Streptococcus pyogenes (penicillin-resistant) |
0.3 |
40 |
? － ? |
Clarithromycin (Biaxin) |
58 |
| Streptococcus pyogenes (penicillin-resistant) |
2.5 |
40 |
? － ? |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
58 |
| Streptococcus pyogenes (penicillin-susceptible) |
- |
0.25 |
? － ? |
Vancomycin (Vancocyn, Lyphocin) |
240 |