Relier Pairs Public Health Activity MatchVersion en ligne Practice public health activity concepts by matching the types of public health activities with examples. par Kristin Zimmerman 1 Active Surveillance 2 Screening 3 Assessment 4 Passive Surveillance Cases or data are reported by health care providers and laboratories. State or local public health personnel reach out to providers and laboratories to determine recent occurrence of a disease or condition under surveillance. Nurses perform blood pressure checks at a community health fair. Non-profit organization surveys the community concerning their exercise habit.