Table 1. Baseline characteristics of study population during acute phase of NE.
| Variable | PUUV nucleocapsid antigen positive (n = 8) | PUUV nucleocapsid antigen negative (n = 5) |
| n | 8 | 5 |
| Female/male | 4/4 | 1/4 |
| Age at diagnosis (years) | 55 (48–65) | 51 (38–63) |
| In-patients/outpatients | 8/0 | 4/1 |
| Duration of hospital stay | 9 (7–13) | 11 (9–12) |
| Assumed path of infection | ||
| - Occupational | 0 | 1 |
| - During leisure time | 8 | 4 |
| Symptoms | ||
| Abdominal pain | 4/8 | 3/5 |
| Back pain | 3/8 | 4/5 |
| Pain of the limbs | 6/8 | 3/5 |
| Headache | 6/8 | 4/5 |
| Visual disorders | 1/8 | 0/5 |
| Diarrhea | 2/8 | 2/5 |
| Nausea/Vomiting | 5/8 | 3/5 |
| Clinical signs | ||
| Fever | 7/8 | 5/5 |
| Hemorrhage | 0/8 | 0/5 |
| Urinary analysis at admission | 6/8 | 4/4 |
| - Proteinuria | 5/6 | 3/5 |
| - Hematuria | 4/6 | 1/5 |
| - Leucocyturia | 1/6 | 0/5 |
| Acute Kidney Injury | ||
| Acute Kidney Injury according to RIFLE classification | 7/8 | 3/5 |
| - Risk | 5 | 1 |
| - Injury | 0 | 1 |
| - Failure | 2 | 1 |