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Distribution of specific resistance genes among 27 erythromycin-resistant GBS isolatesa
| Serotype | No. of isolates carrying resistance gene:
|
||
|---|---|---|---|
| ermB | ermTR | mefA/mefB | |
| Ia | 0 | 0 | 2 |
| Ib | 3 | 3 | 1 |
| II | 1 | 2b | 1 |
| III | 2 | 1b | 4 |
| IV | 0 | 0 | 0 |
| V | 8 | 2b | 0 |
| Total | 13 | 8 | 8 |
Three serotype Ib isolates and one serotype III isolate harbored both the ermB and the ermTR genes.
Isolates revealing an inducible phenotype.
