Microorganism |
MIC50 (μg/ml) |
MIC90 (μg/ml) |
Range (μg/ml) |
Antimicrobial |
Reference |
Enterococcus (erythromycin A-resistant) |
>=256 |
≥256 |
≤1 - >=256 |
Pristinamycin II |
271 |
Enterococcus (erythromycin A-resistant) |
>=512 |
≥512 |
4 - >=512 |
Spiramycin |
271 |
Enterococcus (erythromycin A-resistant) |
>=512 |
≥512 |
32 - >=512 |
Clarithromycin (Biaxin) |
271 |
Enterococcus (erythromycin A-resistant) |
>=512 |
≥512 |
64 - >=512 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
271 |
Enterococcus (erythromycin A-resistant) |
>=512 |
≥512 |
64 - >=512 |
Erythromycin A |
271 |
Enterococcus (erythromycin A-resistant) |
>=512 |
≥512 |
256 - >=512 |
Roxithromycin |
271 |
Enterococcus (erythromycin A-susceptible) |
0.03 |
0.03 |
≤0.007 - 0.06 |
Telithromycin (HMR 3647, RU-66647, Ketek) |
271 |
Enterococcus (erythromycin A-susceptible) |
2 |
2 |
0.25 - 2 |
Spiramycin |
271 |
Enterococcus (erythromycin A-susceptible) |
2 |
4 |
≤0.06 - 4 |
Erythromycin A |
271 |
Enterococcus (erythromycin A-susceptible) |
2 |
4 |
1 - 32 |
Pristinamycin I |
271 |
Enterococcus (erythromycin A-susceptible) |
2 |
8 |
0.125 - 16 |
Roxithromycin |
271 |
Enterococcus (erythromycin A-susceptible) |
4 |
16 |
0.06 - 64 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
271 |
Enterococcus (erythromycin A-susceptible) |
>=256 |
≥256 |
1 - >=256 |
Pristinamycin II |
271 |
Enterococcus (penicillin-resistant) |
1 |
4 |
0.015 - 4 |
Telithromycin (HMR 3647, RU-66647, Ketek) |
271 |
Enterococcus (penicillin-resistant) |
>=128 |
≥256 |
≤1 - >=256 |
Pristinamycin II |
271 |
Enterococcus (penicillin-resistant) |
>=128 |
≥256 |
2 - >=256 |
Pristinamycin I |
271 |
Enterococcus (penicillin-resistant) |
>=512 |
≥512 |
0.125 - >=512 |
Clarithromycin (Biaxin) |
271 |
Enterococcus (penicillin-resistant) |
>=512 |
≥512 |
0.5 - >=512 |
Erythromycin A |
271 |
Enterococcus (penicillin-resistant) |
>=512 |
≥512 |
1 - >=512 |
Roxithromycin |
271 |
Enterococcus (penicillin-resistant) |
>=512 |
≥512 |
1 - >=512 |
Spiramycin |
271 |
Enterococcus (penicillin-resistant) |
>=512 |
≥512 |
2 - >=512 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
271 |
Enterococcus (penicillin-susceptible) |
0.03 |
4 |
0.007 - 8 |
Telithromycin (HMR 3647, RU-66647, Ketek) |
271 |
Enterococcus (penicillin-susceptible) |
>=2 |
≥512 |
≤0.006 - >=512 |
Clarithromycin (Biaxin) |
271 |
Enterococcus (penicillin-susceptible) |
>=2 |
≥512 |
0.25 - >=512 |
Spiramycin |
271 |
Enterococcus (penicillin-susceptible) |
>=4 |
≥256 |
1 - >=256 |
Pristinamycin I |
271 |
Enterococcus (penicillin-susceptible) |
>=4 |
≥512 |
≤0.006 - >=512 |
Erythromycin A |
271 |
Enterococcus (penicillin-susceptible) |
>=8 |
≥512 |
0.125 - >=512 |
Roxithromycin |
271 |
Enterococcus (penicillin-susceptible) |
>=16 |
≥512 |
0.06 - >=512 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
271 |