In typical outbreak investigation, which step is traditionally the final step?

• A. Prepare
• B. Verify the outbreak
• C. Establish a case definition
• D. Evaluate

Answer: (D)

Evaluation is the final step in a typical outbreak investigation. After actions to control the outbreak are implemented and findings are shared, the focus shifts to assessing how well the response worked. This means checking whether transmission was interrupted, whether the chosen interventions reached the right people, and whether data collection and surveillance were sufficient to confirm that the outbreak is over or under control. The goal is to determine if objectives were met, to identify what helped or hindered the response, and to document lessons learned for future outbreaks. A formal final report and plan for ongoing surveillance or maintenance of controls usually follow, ensuring that the investigation can be closed with confidence.