Table 2.
Antimicrobial susceptibility pattern of the 355 Streptococcus pneumoniae strains.
| Antimicrobials | No. of isolates (n) |
Susceptibility | MIC (mg/ml) | |||||
|---|---|---|---|---|---|---|---|---|
| Susceptible (n) |
Intermediate (n) |
Resistant (n) |
Non-sensitive rate (%) | 50% | 90% | Range | ||
| Penicillin | ||||||||
| Meningitis | 114 | 19 | – | 95 | 83.3% | 1.5 | 3 | <0.016-4 |
| Non-meningitis | 241 | 226 | 14 | 1 | 6.2% | 1 | 2 | <0.016-6 |
| Ceftriaxone | ||||||||
| Meningitis | 114 | 71 | 28 | 15 | 37.7% | 0.5 | 1 | 0.008-3 |
| Non-meningitis | 241 | 223 | 15 | 3 | 7.5% | 0.5 | 1 | 0.006-3 |
| Clindamycin | 355 | 8 | 1 | 346 | 97.7% | >256 | >256 | 0.125 to >256 |
| Erythromycin | 355 | 6 | 1 | 348 | 98.3% | >256 | >256 | 0.125 to >256 |
| Tetracycline | 355 | 21 | 9 | 325 | 94.1% | 12 | 24 | 0.094 to >32 |
| Levofloxacin | 355 | 355 | 0 | 0 | 0 | 0.5 | 0.75 | 0.38-2 |
| Trimethoprim/ sulfamethoxazole | 355 | 104 | 32 | 219 | 70.7% | 6 | >32 | 0.094 to >32 |
| Vancomycin | 355 | 355 | 0 | 0 | 0 | 0.38 | 0.5 | 0.19-0.75 |
MIC, minimum inhibitory concentration.