Table 1.
Susceptibility of the tested strains to antibiotics using the disc diffusion method
| Antibiotics | Inhibition zone diameter in mm (mean ± SD) | |
|---|---|---|
| 10NA (E. lactis) | 50NA (E. lactis) | |
| Chloramphenicol (30 μg/disc) | 25 ± 0.58 | 24 ± 2.08 |
| S | S | |
| Clindamycin (2 μg/disc) | 16 ± 0.58 | 25 ± 1.15 |
| I | S | |
| Erythromycin (15 μg/disc) | 10 ± 1.73 | 23 ± 2.65 |
| R | S | |
| Gentamicin (10 μg/disc) | 11 ± 1 | 14 ± 0.58 |
| R | I | |
| Kanamycin (30 μg/disc) | 0 ± 0 | 0 ± 0 |
| R | R | |
| Streptomycin (10 μg/disc) | 10 ± 0.58 | 13 ± 1 |
| R | I | |
| Tetracycline (30 μg/disc) | 26 ± 0.58 | 27 ± 0.58 |
| S | S | |
| Vancomycin (30 μg/disc) | 20 ± 2.08 | 21 ± 1.73 |
| S | S | |
R Resistant, I Intermediate, S Susceptible, according to the breakpoints established by the CLSI