Table 3.
Antimicrobial resistance of Streptococcus pneumoniae strains by minimal inhibitory concentration (MIC)
| 2006–2008 (n = 101) | 2009–2011 (n = 56) | |||||
|---|---|---|---|---|---|---|
| Susceptible | Intermediate | Resistant | Susceptible | Intermediate | Resistant | |
| N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | |
| Penicillina | ||||||
| Meningitis | 21 (53.8) | – | 18 (46.2) | 7 (50.0) | – | 7 (50.0) |
| Non-meningitis | 57 (91.9) | 1 (1.6) | 4 (6.5) | 42 (100.0) | 0 (0.0) | 0 (0.0) |
| Ceftriaxonea | ||||||
| Meningitis | 30 (76.9) | 8 (20.5) | 1 (2.6) | 10 (71.4) | 4 (28.6) | 0 (0.0) |
| Non-meningitis | 59 (95.2) | 1 (1.6) | 2 (3.2) | 38 (90.5) | 2 (4.7) | 2 (4.7) |
| Chloramphenicolb | 89 (88.1) | – | 12 (11.9) | 49 (89.1) | – | 6 (10.9) |
| Erythromycin | 76 (75.2) | 0 (0.0) | 25 (24.8) | 34 (60.7) | 1 (1.8) | 21 (37.5) |
a
In the first period 39 meningitis strains and 62 non-meningitis strains were analysed and in the second period 14 meningitis strains and 42 non-meningitis strains.
b
In the second period 55 strains were analysed for chloramphenicol resistance.