TABLE 2.
Distribution of erythromycin resistance genes according to erythromycin resistance phenotypes and to the different streptococcus groups
| Streptococcus group | No. of ER strainsa | Pheno- type | No. (%) | No. with genotype
|
||
|---|---|---|---|---|---|---|
| erm(B) | mef(A) | erm(B) plus mef(A) | ||||
| S. mitis | 33 | M | 17 (51) | 0 | 16 | 0 |
| iMLSB | 0 | 0 | 0 | 0 | ||
| cMLSB | 16 (49) | 12 | 0 | 4 | ||
| S. anginosus | 18 | M | 2 (11) | 0 | 2 | 0 |
| iMLSB | 1 (6) | 1 | 0 | 0 | ||
| cMLSB | 15 (83) | 12 | 0 | 3 | ||
| S. sanguis | 11 | M | 7 (64) | 0 | 7 | 0 |
| iMLSB | 0 | 0 | 0 | 0 | ||
| cMLSB | 4 (36) | 4 | 0 | 0 | ||
| S. salivarius | 3 | M | 2 (67) | 0 | 2 | 0 |
| iMLSB | 1 (33) | 1 | 0 | 0 | ||
| cMLSB | 0 | 0 | 0 | 0 | ||
| S. bovis | 14 | M | 0 | 0 | 0 | 0 |
| iMLSB | 1 (7) | 1 | 0 | 0 | ||
| cMLSB | 13 (93) | 12 | 0 | 1 | ||
a
ER, erythromycin resistant.