Which step involves controlling the outbreak?

• A. Detect an outbreak
• B. Test the hypothesis
• C. Decide when the outbreak is over
• D. Control outbreak through recalls, facility improvements, and industry collaboration

Answer: (D)

Controlling an outbreak means taking concrete actions that stop transmission and prevent future cases. The most appropriate step is to implement measures that directly reduce exposure and remove the source of contamination, such as recalls of contaminated products, improvements in facilities or processes to prevent recurrence, and collaboration with industry to ensure these corrective actions are applied widely. These interventions actively reduce risk and prevent ongoing or future illnesses.

Detecting an outbreak identifies that a problem exists and prompts investigation, but it does not by itself stop new cases. Testing the hypothesis helps pinpoint the likely source and transmission route, guiding targeted interventions. Deciding when the outbreak is over is an endpoint judgment that follows control efforts and surveillance, not the means of stopping the outbreak.