The antibiotic prescription was based on the results of blood test including examinations of white blood cells (WBC), the percentage of neutrophils (Neu%) and / or C-reactive protein (CRP) (59.4%), stool with white blood cells and / or red blood cells (1.6%), high fever without causes (27.9%), watery stool (86.3%), loose stool with blood (100%), loose stool (97.9%).