Table 5.
Antibacterial efficacy of some commercial antibiotics against E. coli O157:H7 strains—no inhibition zone.
| No. | Pathogenic Species | Antibiotic | Zone of Inhibition (mm) |
|---|---|---|---|
| 1 | E. coli O157:H7 2257 | Erythromycin | - |
| Vancomycin | - | ||
| Penicillin G | - | ||
| 2 | E. coli O157:H7 8624 | Erythromycin | - |
| Vancomycin | - | ||
| Penicillin G | - | ||
| 3 | E. coli O157: NM 3204-92 | Erythromycin | - |
| Vancomycin | - | ||
| Penicillin G | - | ||
| 4 | E. coli O157:H7 ATCC 43895 | Erythromycin | - |
| Vancomycin | - | ||
| Penicillin G | - | ||
| 5 | E. coli O157:H7 ATCC 35150 | Erythromycin | - |
| Vancomycin | - | ||
| Penicillin G | - | ||
| 6 | E. coli O157:H7 ATCC 43889 | Erythromycin | 15 |
| Vancomycin | 10 | ||
| Penicillin G | 9 | ||
| 7 | E. coli O157:H7 ATCC 43890 | Erythromycin | 17 |
| Vancomycin | 10 | ||
| Penicillin G | 9 | ||
| 8 | E. coli O157:H7 ATCC 43894 | Erythromycin | 10 |
| Vancomycin | 8 | ||
| Penicillin G | - | ||
| 9 | E. coli ATCC 25922 | Erythromycin | - |
| Vancomycin | - | ||
| Penicillin G | - |