As part of the French syndromic surveillance system SurSaUDî, the French Public Health Agency (Sant© publique France) collects daily data from the emergency department (ED) network OSCOUR®. The system aims to timely identify, follow and assess the health impact of unusual or seasonal events on emergency medical activity. Individual ED data contain demographic (age, gender, residence zip code), administrative (dates of attendances and discharge, ED, etc.) and medical information (chief complaint, main and associated medical diagnoses, severity).