Table 1 Antibiotic disks used to test E. coli O157:H7 and their respective concentrations
ā Antibiotic disks | Disc code | Concentration | Diameter of zone of inhibition in millimeter (mm) | |||
|---|---|---|---|---|---|---|
| Ā | Ā | Resistant | Intermediate | Susceptible | ||
| Ā | Ā | ā¤ | Ā | ā„ | ||
1 | Amikacin | AK | 30Ā Ī¼g | 14 | 15-16 | 17 |
2 | Amoxycillin-Clavulanic acid | AMC | 20/10Ā Ī¼g | 13 | 14-17 | 18 |
3 | Ceftriaxone | CRO | 30Ā Ī¼g | 14 | 15-17 | 18 |
4 | Cephalothin | KF | 30Ā Ī¼g | 14 | 15-17 | 18 |
5 | Chloramphenicol | C | 30Ā Ī¼g | 12 | 13-17 | 18 |
6 | Ciprofioxacin | CIP | 5Ā Ī¼g | 15 | 16-20 | 21 |
7 | Nalidixic acid | NA | 30Ā Ī¼g | 13 | 14-18 | 19 |
8 | Streptomycin | S | 10Ā Ī¼g | 11 | 12-14 | 15 |
9 | Tetracycline | TE | 30Ā Ī¼g | 11 | 12-14 | 15 |
10 | Sulfamethoxazole - Trimethoprim | SXT | 30Ā Ī¼g | 10 | 11-15 | 16 |