Which statement best describes the goal of surveillance?

• A. Direct patient treatment decisions.
• B. Provides information used to guide policy and disease prevention programs.
• C. Diagnoses individuals.
• D. Replaces clinical testing.

Answer: (B)

Surveillance is about gathering and interpreting data to guide public health actions. By tracking how a disease occurs across populations—the who, where, when, and how it changes over time—surveillance provides the information needed to shape policies, target disease prevention programs, allocate resources, and assess whether interventions are working. This is population-level work, not a tool for deciding how to treat a single patient. It doesn’t diagnose individuals or replace clinical testing; those remain necessary for individual care, while surveillance uses aggregated data from many sources to inform broader public health decisions. For example, noticing rising flu activity can prompt vaccination campaigns and outreach, or monitoring antimicrobial resistance can guide stewardship programs.