| Microorganism |
MIC50
(μg/ml) |
MIC90
(μg/ml) |
Range
(μg/ml) |
Antimicrobial |
Reference |
| Rhodococcus equi |
0.06 |
0.06 |
≤0.015 － 0.12 |
Clarithromycin (Biaxin)  |
488 |
| Rhodococcus equi |
0.13 |
0.13 |
≤0.0078 － 0.25 |
Premafloxacin |
228 |
| Rhodococcus equi |
0.25 |
0.25 |
≤0.015 － 0.25 |
Roxithromycin |
488 |
| Rhodococcus equi |
0.25 |
0.25 |
≤0.015 － 0.25 |
Telithromycin (HMR 3647, RU-66647, Ketek) |
488 |
| Rhodococcus equi |
0.25 |
0.25 |
≤0.015 － 0.5 |
Rifapentine (Priftin) |
488 |
| Rhodococcus equi |
0.25 |
0.25 |
0.12 － 0.25 |
Teicoplanin (Targocid) |
488 |
| Rhodococcus equi |
0.25 |
0.5 |
0.12 － 0.5 |
Vancomycin (Vancocyn, Lyphocin) |
488 |
| Rhodococcus equi |
0.5 |
0.5 |
≤0.015 － 0.5 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
488 |
| Rhodococcus equi |
0.5 |
1 |
0.25 － 1 |
Levofloxacin (Levaquin, Quixin) |
488 |
| Rhodococcus equi |
0.5 |
8 |
≤0.03 － >32 |
Ceftiofur |
228 |
| Rhodococcus equi |
1 |
1 |
0.03 － 2 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
488 |
| Rhodococcus equi |
1 |
1 |
≤0.03 － 2 |
Enrofloxacin |
228 |
| Rhodococcus equi |
1 |
1 |
≤0.03 － 4 |
Dalbavancin |
228 |
| Rhodococcus equi |
1 |
2 |
≤0.06 － 8 |
Sarafloxacin |
228 |
| Rhodococcus equi |
1 |
- |
1 － ? |
Pexiganan |
112 |
| Rhodococcus equi |
2 |
2 |
0.12 － 2 |
Doxycycline (Doxycycline hyclate, Doxy, Vibra, Vibramycin) |
488 |
| Rhodococcus equi |
2 |
2 |
0.5 － 2 |
Linezolid (PNU-100766, U-100766, Zyvox) |
228 |
| Rhodococcus equi |
2 |
4 |
0.03 － 8 |
Josamycin |
488 |
| Rhodococcus equi |
4 |
4 |
0.03 － 4 |
Pristinamycin |
488 |
| Rhodococcus equi |
4 |
8 |
≤0.015 － 8 |
Penicillin (Benzylpenicillin, Penicillin G, Bicillin C-R/L-A, Pfizerpen, Wycellin) |
488 |
| Rhodococcus equi |
4 |
8 |
0.25 － 8 |
Tetracycline (Sumycin, Achromycin V, Steclin) |
228 |
| Rhodococcus equi |
8 |
8 |
0.12 － 8 |
Quinupristin/Dalfopristin (Synercid) |
488 |
| Rhodococcus equi |
16 |
16 |
0.25 － 16 |
Lincomycin (Lincocin) |
488 |
| Rhodococcus equi |
16 |
16 |
4 － 6 |
Eperezolid (PNU-100592) |
228 |
| Rhodococcus equi |
16 |
32 |
2 － >32 |
Florfenicol |
228 |
| Rhodococcus equi |
>16 |
>32 |
2 － >32 |
Tilmicosin |
228 |
| Rhodococcus equi (33701 + Sensititre Plate) |
- |
- |
≤0.06 － 0.12 |
Clarithromycin (Biaxin) |
1042 |
| Rhodococcus equi (33701 + Sensititre Plate) |
- |
- |
0.06 － 2 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
1042 |