Table 3.
Results of antimicrobial resistance of L. monocytogenes isolates.
| Rank1 | Antimicrobial class | Antibiotic | Number (%) of L. monocytogenes2 | ||
|---|---|---|---|---|---|
| R | I | S | |||
| II | Penicillins | Ampicillin | 0 (0.0) | 0 (0.0) | 26 (100) |
| Ampicillin/sulbactam | 0 (0.0) | 0 (0.0) | 26 (100) | ||
| II | Cephalosporine | Amoxicillin-clavulanate | 5 (19.2) | 0 (0.0) | 21 (80.8) |
| Cefotaxime | 7 (26.9) | 3 (11.5) | 16 (61.5) | ||
| Cephalothin | 6 (23.1) | 3 (11.5) | 17 (65.4) | ||
| I | Aminoglycosides | Gentamicin | 24 (92.3) | 2 (7.7) | 0 (0) |
| Streptomycin | 26 (100) | 0 (0) | 0 (0) | ||
| Kanamycin | 26 (100) | 0 (0) | 0 (0) | ||
| II | Tetracyclines | Tetracycline | 10 (38.5) | 0 (0.0) | 16 (61.5) |
| I | Quinolones | Ciprofloxacin | 0 (0.0) | 2 (12.5) | 14 (87.5) |
| Nalidix Acid | 26 (100) | 0 (0.0) | 0 (0.0) | ||
| II | Sulphonamides | Trimethoprim-sulfamethoxazole | 16 (61.5) | 0 (0.0) | 10 (38.5) |
| II | Phenicols | Chloramphenicol | 10 (38.5) | 0 (0.0) | 16 (61.5) |
| I | Macrolides | Erythromycin | 10 (38.5) | 0 (0.0) | 16 (61.5) |
| I | Carbapenem | Meropenem | 16 (61.5) | 0 (0.0) | 10 (38.5) |
1
Rank of antimicrobial agents is based on World Health Organization’s categorization of critical importance in human drugs. Rank I, critically important; rank II, highly important.
2
R, resistant; I, intermediate; S, sensitive.