TABLE 1.
Genital group B streptococcus antibiogram profile for Calgary, Alberta (2011)
| Antibiotic | % Susceptible, (n=309) | % Resistant, (n=309) | Resistance mechanism* | Total, % |
|---|---|---|---|---|
| Penicillin | 100 | None | N/A | N/A |
| Erythromycin | 75 | 25 | Efflux | 3 |
| MLSB-I | 8.1 | |||
| MLSB-C | 14.2 | |||
| Inducible ribosomal methylation (Clindamycin) | 78 | 22 | MLSB-I | 8.1 |
| MLSB-C | 14.2 |
*
Based on the phenotypic antibiotic susceptibility profile. Efflux msrA (erythromycin resistant [R], clindamycin sensitive [D-test negative]); MLSB-C Ribosomal methylation (constitutive) (erythromycin R, clindamycin R); MLSB-I Ribosomal methylation (inducible) (erythromycin R, clindamycin R [D-test positive]); N/A Not applicable