| Microorganism |
MIC50
(μg/ml) |
MIC90
(μg/ml) |
Range
(μg/ml) |
Antimicrobial |
Reference |
| Staphylococcus aureus (erythromycin A-susceptible) |
0.25 |
0.25 |
0.06 － 0.5 |
Clarithromycin (Biaxin)  |
950 |
| Staphylococcus aureus (erythromycin A-susceptible) |
2 |
2 |
0.25 － >=16 |
Azithromycin (Zithromax, Sumamed, Zitrocin) |
950 |
| Staphylococcus aureus (erythromycin-resistant + constitutively erm resistant mechanism) |
>128 |
>128 |
>128 － ? |
Telithromycin (HMR 3647, RU-66647, Ketek) |
16 |
| Staphylococcus aureus (erythromycin-resistant + inducible erm resistant mechanism) |
0.12 |
25 |
0.06 － 0.5 |
Telithromycin (HMR 3647, RU-66647, Ketek) |
162 |
| Staphylococcus aureus (erythromycin-resistant + methicillin-resistant) |
1 |
1 |
0.5 － 1 |
Quinupristin/Dalfopristin (Synercid) |
448 |
| Staphylococcus aureus (erythromycin-resistant + methicillin-resistant) |
>64 |
>64 |
32 － >64 |
Telithromycin (HMR 3647, RU-66647, Ketek) |
448 |
| Staphylococcus aureus (erythromycin-resistant + methicillin-resistant) |
>64 |
>64 |
>64 － ? |
HMR 3004 (RU 64004) |
448 |
| Staphylococcus aureus (erythromycin-resistant + methicillin-resistant) |
>256 |
>256 |
>256 － ? |
Clindamycin (Cleocin) |
448 |
| Staphylococcus aureus (erythromycin-resistant + methicillin-resistant) |
>512 |
>512 |
>512 － ? |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
448 |
| Staphylococcus aureus (erythromycin-resistant + methicillin-susceptible) |
- |
- |
0.03 － 8 |
HMR 3004 (RU 64004) |
448 |
| Staphylococcus aureus (erythromycin-resistant + methicillin-susceptible) |
- |
- |
0.03 － >32 |
Telithromycin (HMR 3647, RU-66647, Ketek) |
448 |
| Staphylococcus aureus (erythromycin-resistant + methicillin-susceptible) |
- |
- |
0.12 － ? |
Clindamycin (Cleocin) |
448 |
| Staphylococcus aureus (erythromycin-resistant + methicillin-susceptible) |
- |
- |
0.25 － 0.5 |
Quinupristin/Dalfopristin (Synercid) |
448 |
| Staphylococcus aureus (erythromycin-resistant + methicillin-susceptible) |
- |
- |
>512 － ? |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
448 |
| Staphylococcus aureus (erythromycin-resistant + msr resistant mechanism) |
0.06 |
0.12 |
≤0.015 － 0.25 |
Telithromycin (HMR 3647, RU-66647, Ketek) |
162 |
| Staphylococcus aureus (erythromycin-resistant + msr(A)) |
0.03 |
0.06 |
0.03 － 0.06 |
Cethromycin (ABT-773) |
954 |
| Staphylococcus aureus (erythromycin-resistant + msr(A)) |
>64 |
>64 |
1 － >64 |
Erythromycin (E-mycin, Ery-tab, Benzamycin) |
954 |
| Staphylococcus aureus (erythromycin-resistant) |
0.06 |
0.12 |
≤0.03 － 0.12 |
Retapamulin |
592 |
| Staphylococcus aureus (erythromycin-resistant) |
0.25 |
30 |
≤0.12 － >30 |
Gentamicin (Gentamycin, Garamycin) |
592 |
| Staphylococcus aureus (erythromycin-resistant) |
0.5 |
1 |
≤0.25 － 1 |
Tiamulin (Tiamuline, Tiamutilin) |
592 |
| Staphylococcus aureus (erythromycin-resistant) |
>2 |
>2 |
≤0.03 － >2 |
Penicillin (Benzylpenicillin, Penicillin G, Bicillin C-R/L-A, Pfizerpen, Wycellin) |
592 |
| Staphylococcus aureus (erythromycin-resistant) |
>2 |
>2 |
≤0.25 － >2 |
Oxacillin (Prostaphilin, Bactocil, Prostaphlin) |
592 |
| Staphylococcus aureus (erythromycin-resistant) |
2 |
2 |
0.25 － 4 |
Linezolid (PNU-100766, U-100766, Zyvox) |
592 |
| Staphylococcus aureus (erythromycin-resistant) |
>2 |
>256 |
≤2 － >256 |
Mupirocin (Bactroban) |
592 |
| Staphylococcus aureus (erythromycin-resistant) |
>4 |
>4 |
2 － >4 |
Bacitracin (Baci-IM) |
592 |
| Staphylococcus aureus (erythromycin-resistant) |
>4 |
>32 |
≤0.25 － >32 |
Cephalothin (Cefalotin, Keflin, Seffin) |
592 |
| Staphylococcus aureus (erythromycin-resistant) |
>16 |
>16 |
? － ? |
Telithromycin (HMR 3647, RU-66647, Ketek) |
496 |
| Staphylococcus aureus (erythromycin-resistant) |
>30 |
>30 |
≤0.12 － >30 |
Ofloxacin (Floxin) |
592 |