TABLE 1.
MICs of growth-enhancing antibiotics for S. aureus, E. faecalis, and E. faecium control strains (medians and ranges as recorded in 12 repetitive tests)
| Antibiotic | Result for organisma:
|
|||||
|---|---|---|---|---|---|---|
|
S. aureus (ATCC 29213)
|
E. faecalis (ATCC 29212)
|
E. faecium (LMG 14423T)
|
||||
| Range | Median | Range | Median | Range | Median | |
| Avilamycin | 0.5–2 | 1 | 0.25–0.5 | 0.25 | 0.25 | 0.25 |
| Avoparcin | 4 | 4 | 2–4 | 4 | 2 | 2 |
| Bacitracin | 2 | 2 | 2 | 2 | ≤0.12–1 | 0.5 |
| Tylosin | 1–2 | 2 | 1–2 | 2 | 0.5 | 0.5 |
| Virginiamycin | 2–4 | 2 | 2–4 | 2 | 0.25–0.5 | 0.25 |
| Narasin | 0.25 | 0.25 | 0.25 | 0.25 | ≤0.12 | ≤0.12 |
a
Results are expressed in micrograms per milliliter, except for those with bacitracin, which are in international units per milliliter.