Loco-regional Complications of Pharyngitis in Children: a National Case-Control Study

Inclusion Criteria: Cases: children \< 18 years old hospitalized for peripharyngeal suppurations, diffuse cervical cellulitis or cervical adenophlegmon in participating Ear, Nose \& Throat (ENT) and pediatric departments. Controls: children \< 18 years old with pharyngitis but without infectious complications recruited by general practitioners (GPs) or by primary care pediatricians in private setting, matched to cases by age, date of infectious complication (index date), delay between the pharyngitis and the index date and, if possible, the referring physician. Exclusion Criteria: Children (cases or controls) with chronic renal failure, hemophilia, chronic thrombocytopenia or immunosuppression (constitutional or iatrogenic) at the time of pharyngitis