| Microorganism |
MIC50
(μg/ml) |
MIC90
(μg/ml) |
Range
(μg/ml) |
Antimicrobial |
Reference |
| Streptococcus spp. (group C) |
0.5 |
8 |
0.016 － 16 |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay)  |
493 |
| Streptococcus spp. (group D) |
- |
- |
0.25 － 4 |
IB-367 |
338 |
| Streptococcus spp. (group F) |
0.016 |
0.12 |
≤0.008 － 2 |
Imipenem |
493 |
| Streptococcus spp. (group F) |
0.03 |
0.25 |
≤0.03 － 8 |
Amoxicillin-clavulanate |
493 |
| Streptococcus spp. (group F) |
0.12 |
0.5 |
≤0.008 － 4 |
Ertapenem (Invanz) |
493 |
| Streptococcus spp. (group F) |
0.5 |
8 |
0.016 － 16 |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay) |
493 |
| Streptococcus spp. (group G) |
0.016 |
0.12 |
≤0.008 － 288 |
Imipenem |
493 |
| Streptococcus spp. (group G) |
0.03 |
0.25 |
≤0.03 － 8 |
Amoxicillin-clavulanate |
493 |
| Streptococcus spp. (group G) |
0.12 |
0.5 |
≤0.008 － 4 |
Ertapenem (Invanz) |
493 |
| Streptococcus spp. (group G) |
0.5 |
8 |
0.016 － 16 |
Ciprofloxacin (Cipro, Ciproxin, Ciprobay) |
493 |
| Streptococcus spp. (North America) |
0.75 |
1.5 |
? － ? |
Linezolid (PNU-100766, U-100766, Zyvox) |
306 |
| Streptococcus spp. (serogroup A) |
0.008 |
0.015 |
≤0.008 － 0.015 |
Telithromycin (HMR 3647, RU-66647, Ketek) |
496 |
| Streptococcus spp. (serogroup A) |
≤0.01 |
≤0.01 |
≤0.01 － 0.25 |
Oritavancin (LY333328) |
4 |
| Streptococcus spp. (serogroup A) |
0.01 |
0.25 |
≤0.01 － 0.25 |
Teicoplanin (Targocid) |
43 |
| Streptococcus spp. (serogroup A) |
≤0.015 |
≤0.015 |
≤0.015 － ? |
Cefdinir (Omnicef, Cefdiel) |
267 |
| Streptococcus spp. (serogroup A) |
≤0.03 |
≤0.03 |
≤0.03 － ? |
Penicillin (Benzylpenicillin, Penicillin G, Bicillin C-R/L-A, Pfizerpen, Wycellin) |
43 |
| Streptococcus spp. (serogroup A) |
≤0.06 |
≤0.06 |
≤0.06 － ? |
Cefotaxime (Cephotaxime, Claforan) |
43 |
| Streptococcus spp. (serogroup A) |
≤0.06 |
≤0.06 |
≤0.06 － ? |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
496 |
| Streptococcus spp. (serogroup A) |
0.06 |
0.12 |
≤0.015 － 0.12 |
Cefixime (Suprax) |
267 |
| Streptococcus spp. (serogroup A) |
0.12 |
0.25 |
≤0.12 － 0.5 |
Quinupristin/Dalfopristin (Synercid) |
496 |
| Streptococcus spp. (serogroup A) |
0.25 |
0.25 |
≤0.06 － 0.25 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
496 |
| Streptococcus spp. (serogroup A) |
0.25 |
0.25 |
0.12 － 0.25 |
Vancomycin (Vancocyn, Lyphocin) |
43 |
| Streptococcus spp. (serogroup A) |
≤0.25 |
≤0.25 |
≤0.25 － ? |
Clindamycin (Cleocin) |
496 |
| Streptococcus spp. (serogroup A) |
>4 |
>4 |
≤0.25 － >4 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
43 |
| Streptococcus spp. (serogroup B) |
0.008 |
0.015 |
≤0.008 － 0.015 |
Telithromycin (HMR 3647, RU-66647, Ketek) |
496 |
| Streptococcus spp. (serogroup B) |
0.01 |
0.06 |
≤0.01 － 0.5 |
Oritavancin (LY333328) |
4 |
| Streptococcus spp. (serogroup B) |
0.01 |
0.12 |
≤0.01 － 0.25 |
Teicoplanin (Targocid) |
43 |
| Streptococcus spp. (serogroup B) |
0.03 |
0.03 |
≤0.015 － 0.03 |
Cefdinir (Omnicef, Cefdiel) |
267 |