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Prevalence of resistance genes in Group B Streptococcus (GBS) isolated from people (33 isolates) and cattle (236 isolates) on dairy farms in Colombia and significance of the association with host species.
| Antimicrobial class | Resistance gene | GBS source | P-value | |
|---|---|---|---|---|
| Human n (%) | Bovine n (%) | |||
| Macrolides | ermA | 8 (24) | 33 (14) | 0.12 |
| ermB | 13 (39) | 125 (53) | 0.07 | |
| mefA | 2 (6) | 0 (0) | Not tested | |
| Tetracyclines | tet(K) | 3 (9) | 2 (1) | 0.001 |
| tet(M) | 18 (55) | 174 (74) | 0.02 | |
| tet(O) | 6 (18) | 32 (14) | 0.24 | |
