| Before PCV7 | After PCV7 | |
| Total emergency department visits of children ⩽3 years old | 13 507 | 21 500 |
| Total no. of patients with blood cultures performed | 1251 | 2028 |
| Patients with complete records | 1184 (94.6%) | 1994 (98.3%) |
| Patients analysed | 148 (11.8%) | 275 (13.6%) |
| % Males | 54.7% | 56.0% |
| Average age | 17±11 months | 15±10 months |
| Positive cultures | 17 (11.5%) | 14 (5.1%) |
| Pathogens | 10 (6.8%) | 1 (0.36%) |
| Contaminants | 7 (4.7%) | 13 (4.7%) |