The OpenDengue project aims to fill a gap in dengue reporting by providing, in one database, publicly available, globally comprehensive data of both historical and current dengue cases. Reported cases are country-level and currently include dengue cases at all levels of severity (dengue, dengue with/without warning signs, severe dengue, dengue haemorhaggic fever, dengue shock syndrome, dengue deaths) and methods of confirmation (suspected, probable, clinically confirmed, laboratory confirmed).