Comparison of phenotypes and genotypes of erythromycin-resistant GAS isolatesa
Phenotypeb | Genotype | No. of isolates | MIC (μg/ml) | |||
---|---|---|---|---|---|---|
Erythromycin | Clindamycin | |||||
90% | Range | 90% | Range | |||
M | mefA | 33 | 32 | 8-32 | 0.06 | 0.06-0.125 |
iMLSB | ermB | 1 | ≥1,024 | 0.25 | ||
iMLSB | ermTR | 8 | ≥1,024 | 4-≥1024 | 0.25 | 0.06-0.5 |
cMLSB | ermB | 5 | ≥1,024 | 256-≥1024 | 512 | 1-512 |
Unknown | 2 | ≥1,024 | 0.06-0.125 |