Table 4.
Antimicrobial susceptibility of major pathogens
| Major pathogens | No. of isolates (%) |
MIC90 (μg/mL) | ||
|---|---|---|---|---|
| S | I | R | ||
| Streptococcus pneumoniae (n = 57) | ||||
| Penicillina | 27 (47.4) | 10 (17.5) | 20 (35.1) | 2 |
| Amoxicillin/clavulanic acid | 49 (86.0) | 6 (10.5) | 2 (3.5) | 4/2 |
| Erythromycin | 25 (43.9) | 0 | 32 (56.1) | >32 |
| Cefuroximeb | 30 (52.6) | 0 | 27 (47.4) | 8 |
| Ceftriaxoneb | 38 (66.7) | 15 (26.3) | 4 (7.0) | 1 |
| Levofloxacin | 57 (100.0) | 0 | 0 | 1 |
| Vancomycin | 57 (100.0) | 0 | 0 | 0.25 |
| Haemophilus influenzae (n = 16) | ||||
| Amoxicillin/clavulanic acid | 16 (100.0) | 0 | 0 | 0.5/0.25 |
| Cefuroxime | 15 (93.8) | 0 | 1 (6.3) | 1 |
| Ceftriaxone | 15 (93.8) | 0 | 1 (6.3) | 1 |
| Azithromycin | 14 (87.5) | 0 | 2 (12.5) | 2 |
| Ciprofloxacin | 16 (100.0) | 0 | 0 | 1 |
| Imipenem | 16 (100.0) | 0 | 0 | 2 |
| Klebsiella pneumoniae (n = 36) | ||||
| Amoxicillin/clavulanic acid | 27 (75.0) | 1 (2.8) | 8 (22.2) | 64/32 |
| Cefuroxime | 32 (88.9) | 0 | 4 (11.1) | 64 |
| Ceftriaxone | 35 (97.2) | 0 | 1 (2.8) | 0.5 |
| Ciprofloxacin | 36 (100.0) | 0 | 0 | 0.25 |
| Imipenem | 36 (100.0) | 0 | 0 | 0.5 |
S, susceptible; I, intermediate; R, resistant; MIC, minimum inhibitory concentration; MIC90, MIC of 90% of the organisms.
a
Susceptible, MIC ≤ 0.1 μg/mL; intermediate, MIC = 0.12–1 μg/mL; resistant, MIC ≥ 2 μg/mL.
b
Susceptible, MIC ≤ 1 μg/mL; intermediate, MIC = 2 μg/mL; resistant, MIC ≥ 4 μg/mL.