Assessment of the Efficacy on the 5th Day of Antibiotic Therapy for Febrile Urinary Tract Infections Among Children From 3 Months to 18 Years Old

Inclusion Criteria: * Child between 3 months and 18 years old * Diagnosis of uncomplicated febrile urinary tract infection certain and defined by : * Naked fever (without an identifiable source of infection) for at least 24 hours for boys and 48 hours for girls. * A urine test strip with at least 2 crosses of leukocyturia ≥ or 1 cross of leukocyturia ≥ with positive nitrituria * A cytobacteriological urine test with leukocyturia greater than 10/mm3 in the case of catheterisation or Clean catch or greater than 100/mm3 if the collection is performed by bag (Urinocol®). * Positive bacteriological urine culture * Response to antibiotic therapy * Absence of other diagnoses that could explain the clinical picture Exclusion Criteria: * Children under 3 months old * Immunodepression * Underlying uropathy or known neurological bladder disease