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Distribution of MICs of tetracycline, erythromycin, and penicillin for 65 tetracycline- and erythromycin-resistant isolates of S. pneumoniae
| Antibiotic | No. of strains inhibited by MIC (μg/ml) ofa:
|
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| <0.12 | 0.12 | 0.25 | 0.5 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | >128 | |
| Tetracycline | 5 | 13 | 15 | 13 | 2 | 17 | ||||||
| Erythromycin | 1 | 3 | 1 | 5 | 2 | 4 | 7 | 42 | ||||
| Penicillin | 43 | 5 | 9 | 1 | 5 | 2 | ||||||
No strain was inhibited by a MIC of 1 μg/ml.
