Table 3.
Microbiological and infection characteristics of the patients
| Variable | Infection without SIRS (n = 32) | Sepsis (n = 47) | Severe sepsis (n = 27) |
| Assessment of infection (n) | |||
| Gram-positive bacteria | 6 | 12 | 10 |
| Gram-negative bacteria | 7 | 10 | 7 |
| Other bacteria | 0 | 2a | 0 |
| Bacteremia | 1 | 4 | 7 |
| Virus | 3b | 4c | 1d |
| Chest X-ray-verified pneumoniae | 9 | 13 | 7 |
| Radiological evidencef | 0 | 1 | 0 |
| Obvious clinical infectiong | 7 | 5 | 2 |
| Focus of infection (n) | |||
| Upper respiratory tract infection | 1 | 0 | 1 |
| Lower respiratory tract infection | 12 | 25 | 15 |
| Endocarditis | 1 | 0 | 1 |
| Gastroenteritis | 5 | 1 | 0 |
| Pyelonephritis | 2 | 2 | 1 |
| Cystitis | 0 | 3 | 3 |
| Skin/soft tissue infection | 1 | 4 | 3 |
| Bone/joints | 2 | 1 | 0 |
| Other | 8 | 11 | 3 |
SIRS, systemic inflammatory response syndrome. aMycoplasma pneumoniae (n = 2). bEpstein–Barr virus (n = 1), influenzae A virus (n = 2). cEpstein–Barr virus (n = 2), influenza A virus (n = 2). dPuumala virus (n = 1). eChest X-ray-verified pneumonia with no identified pathogen. fInfection documented by imaging techniques (other than Chest X-ray) with no identified pathogen. gClinical infection (i.e. erysipelas, wound infection).