| Stool culture | Negative |
| Biological examinations | Results |
| white blood cells | 400,000/mm3 |
| Hemoglobin | 12 g/dl |
| platelets | 155,000/mm3 |
| AST | 43 IU/ml |
| ALT | 47 IU/ml. |
| HBsAg | Negative |
| Ac anti HBc total | Negative |
| Ac anti HCV | Negative |
| HIV | Negative |