Surveillance and Disease Reporting Practice Test

Event-driven surveillance is a rapid, flexible way to detect potential health threats by collecting and analyzing reports of unusual health events from non-traditional sources, such as media stories, hotlines, community networks, or other informal channels, and then validating and investigating those signals. This approach aims to pick up signals early, before formal, routine data fully capture an outbreak. A classic example is when reports emerge about clusters of fever in clinics; health authorities would investigate to determine whether there is an outbreak and what response is needed. This method is distinct from systems that rely solely on scheduled surveys, routine hospital data, or only laboratory data, which may miss early, non-laboratory signals or delay detection.