The Ten CRVS milestones framework
CRVS systems are passive
The notification of vital events is passive from a CRVS system perspective in most countries.
Notification relies heavily on the family to follow a tortuous process of up to four instances of contact with the system to provide the necessary documents to register an event, and up to six to get a certificate of the vital event. Cases of birth are simpler than death events, and events that occurred in health facilities are simpler than those in the community.
There are only a few examples of countries where there is some sort of active surveillance of vital events. Brazil is one of these examples, where a team in each municipality has been assigned to monitor their catchment area and capture vital events (births or deaths) that have not been recorded using the routine CRVS system.