Table 3.
Multi-drug resistance patterns in 60 E. coli isolated from clinical mastitis
| Number | Antibiotics resistance patterns | Number (%) of multi-resistant isolates |
|
|---|---|---|---|
| All E. coli isolates | STEC isolates | ||
| 1 | P, Ty, Ot, E, Am, S, N, Sxt | 2 (3.3%) | 0 (0%) |
| 2 | P, Ty, Ot, E, Am, S, N, Sxt, Ls | 1 (1.7%) | 0 (0%) |
| 3 | P, Ty, Ot, E, Am, S, N, FF, Ls | 3 (5%) | 2 (15.4%) |
| 4 | P, Ty, Ot, E, Am, S, N, Gm, Ls | 2 (3.4%) | 0 (0%) |
| 5 | P, Ty, Ot, E, Am, S, N, Sxt, Cf, Cl | 4 (6.7%) | 1 (7.7%) |
| 6 | P, Ty, Ot, E, Am, S, N, FF, Ls, Cl | 2 (3.3%) | 1 (7.7%) |
| 7 | P, Ty, Ot, E, Am, S, N, FF, Ls, Cf | 5 (8.3%) | 0 (0%) |
| 8 | P, Ty, Ot, E, Am, S, N, Gm, FF, Cf | 2 (3.3%) | 0 (0%) |
| 9 | P, Ty, Ot, E, Am, S, N, Sxt, FF, Ls, Cf | 3 (5%) | 1 (7.7%) |
| 10 | P, Ty, Ot, E, Am, S, N, Sxt, Gm, FF, Cf | 5 (8.3%) | 1 (7.7%) |
| 11 | P, Ty, Ot, E, Am, S, N, Sxt, Gm, FF, Ls | 3 (5%) | 0 (0%) |
| 12 | P, Ty, Ot, E, Am, S, N, Sxt, Gm, Cf, Cl | 4 (6.7%) | 1 (7.7%) |
| 13 | P, Ty, Ot, E, Am, S, N, Gm, FF, Ls, Cl | 2 (3.3%) | 0 (0%) |
| 14 | P, Ty, Ot, E, Am, S, N, Sxt, Gm, FF, Ls, Cf | 4 (6.7%) | 0 (0%) |
| 15 | P, Ty, Ot, E, Am, S, N, Sxt, Gm, FF, Cf, Cl | 16 (26.7%) | 5 (38.4%) |
| 16 | P, Ty, Ot, E, Am, S, N, Gm, FF, Ls, Cf, Cl | 2 (3.3%) | 1 (7.7%) |
P: Penicillin, Ty: Tylosin, Ot: Oxytetracyclin, E: Erythromycin, Am: Ampicillin, S: Streptomycin, N: Neomycin, Sxt: Sulfamethoxazole-trimethoprim, Gm: Gentamicin, FF: Florfenicol, Ls: Lincospectin, Cf: Ceftifor, and Cl: Colistin