Table 3. Antibiotic resistance/susceptibility spectrum of the food borne L. monocytogenes isolates.
| Listeria monocytogenes spectrum | ||||
|---|---|---|---|---|
| Group | Antimicrobial agent | Susceptible (%) | Intermediate (%) | Resistant (%) |
| Nitrofurantoins | Nitrofurantoin | 17 (18.88) | 52 (55.55) | 21 (23.33) |
| Aminoglycosides | Gentamicin | 18 (20.00) | 60 (66.66) | 12 (13.33) |
| Streptomycin | 15 (16.66) | 45 (50.00) | 30 (33.33) | |
| Fluoroquinolones | Ofloxacin | 52 (57.77) | 38 (42.22) | NIL |
| Ciprofloxacin | 30 (33.33) | 48 (53.33) | 12 (13.33) | |
| Pefloxacin | 18 (20.00) | 60 (66.66) | 12 (13.33) | |
| ẞ- lactams | Amoxycillin | NIL | NIL | 90(100) |
| Cloxacillin | NIL | NIL | 90(100) | |
| Augumentin | NIL | NIL | 90(100) | |
| Tetracycline | Tetracycline | 25 (27.77) | 35 (38.88) | 30 (33.33) |
| Macrolides | Erythromycin | 22 (24.44) | 48 (53.33) | 20 (22.22) |
| Cephems | Cefuroxime | 12 (13.33) | 25 (27.77) | 43 (47.77) |
| Ceftazidine | NIL | NIL | 90(100) | |
| Ceftriazone | NIL | 48 (53.33) | 42 (46.66) | |