Inclusion Criteria:  Be of legal age Be the parent/legal guardian of a child aged between 3 months and 15 years, A child with a fever > 38°celsus on arrival at the emergency room (measured by electronic thermometer rectally for children under 2 years of age or axillary/oral for children over 2 years of age), Severity of care rating by the IOA grade 4 (non-emergency care) Parent affiliated to a social security system or entitled to it Parent under "AME" French social security system Parent informed and having signed the consent  Exclusion Criteria  Parent/legal guardian who does not speak or read French, Child with a pathology that does not allow for rectal temperature taking Parent/legal guardian with a visual impairment that prevents reading the information note and/or the information brochure. Parent / legal guardian under guardianship