Table 3.
Results of Antimicrobial Resistance Tests by Disk Diffusion Method for MRSA
| Antimicrobial Category | Antimicrobial Agent | Negative | Positive | Pvalue for χ2 |
|---|---|---|---|---|
| Oxazolidinones | Linezolid | 50(100%) | – | |
| Folat pathway inhibitors | Trimethoprim-sulphamethoxazole | 31(62%) | 19(38%) | 0.090 |
| Phenicols | Chloramphenicol | 32(64%) | 18(36%) | 0.048* |
| Fluoroquinolones | Ciprofloxacin | 16(32%) | 34(68%) | 0.011* |
| Lincosamides | Clindamycin | 7(14%) | 43(86%) | <0.0001* |
| Macrolides | Erythromycin | 12(24%) | 38(76%) | <0.0001* |
| Aminoglycosides | Gentamycin | 15(31%) | 35(69%) | 0.005* |
| Ansamycins | Rifampin | 21(42%) | 29(58%) | 0.258 |
| Tetracyclines | Tetracycline | 18(36%) | 32(64%) | 0.048* |
| Glycopeptides | Vancomycin | 50(100%) | – | |
| Penicillinase-stable penicillins | Cefoxitin | – | 50(100%) |
Note: *Denotes statistically significant difference between resistance and susceptible MRSA isolated.