Which statement best describes sentinel surveillance in public health?

• A. Selected sites provide high-quality data for trends.
• B. Health authorities actively seek data from all healthcare facilities.
• C. Reports come automatically from facilities without selection.
• D. It replaces the need for other surveillance methods.

Answer: (A)

Sentinel surveillance relies on collecting high-quality data from a carefully chosen subset of reporting sites to monitor disease trends over time. By selecting representative sites and standardizing data collection, this approach can provide timely and reliable signals about changes in activity without needing data from every facility. That’s why describing sentinel surveillance as coming from selected sites that yield high-quality data for trends is the best fit. It isn’t about gathering data from all facilities or automatic reporting from every site, and it doesn’t replace other surveillance methods; it complements them, offering efficient, targeted insight while broader systems provide wider coverage.