Table 1 Guideline for antimicrobial discs used for susceptibility test of B. cereus with their respective concentrations
Antimicrobial agents | Symbols | Disc potency (μg) | Zone diameter, nearest whole mm | ||
|---|---|---|---|---|---|
Resistance (≤) | Moderate | Susceptible (≥) | |||
Amoxicillin | AML | 20 | 13 | 14–17 | 18 |
Ampicillin | AMP | 10 | 28 | – | 29 |
Cefoxitin | FOX | 30 | 21 | – | 22 |
Erythromycin | E | 15 | 13 | 14–22 | 23 |
Kanamycin | K | 30 | 13 | 14–17 | 18 |
Tetracycline | TE | 30 | 14 | 15–18 | 19 |
Vancomycin | VA | 30 | 9 | 10–11 | 12 |
Doxycycline | D | 30 | 12 | 13–15 | 16 |
Enrofloxacin | ENR | 5 | 15 | 16–20 | 21 |
Penicillin | P | 10 unit | 28 | – | 29 |