types of surveillance

Question 1

passive surveillance

Answer 1

disease reported by doctors.
pros: not expensive, not complicated
cons: quality of report is reliant on doctor, and the information is often limited

Question 2

active surveillance

Answer 2

health agencies contact health providers for reports.
Pros: ensure accuracy and quality of the information
use: specific investigation or during outbreak

Question 3

syndromic surveillance

Answer 3

studying and tracking the symptoms of a disease instead of the disease itself.
Use: when time is short, when diagnosis are hard to take, or during outbreaks

Question 4

sentinel

Answer 4

Professionals who represent a specific place or population report health events to health agencies.
Use: when reliable data can’t be obtained through passive surveillance
pros: able to implement intervention measures earlier and isn’t reliant on doctors