Assertion: passive surveillance | /r/HasProperty | the most common type
Facets:
value: in tracking communicable diseases
type: OTHER
Source sentences:
text: Passive surveillance is the most common type in tracking communicable diseases.
text: Passive surveillance is the most common method used to detect VPDs, the least expensive, and covers the widest geographical areas; however it can be difficult to ensure completeness and timeliness of data collection.