In the intervention phase of an outbreak investigation, what is the primary objective?

• A. Develop short-term and long-term plans to control disease outbreak
• B. Collect descriptive data
• C. Do lab testing
• D. Write a research paper

Answer: (A)

In the intervention phase of an outbreak response, the main aim is to take action to stop the spread and prevent future cases. This means planning and implementing control measures that work immediately to reduce transmission (short-term actions) while also establishing strategies that prevent recurrence and sustain protection over time (long-term actions). Examples include isolating cases, tracing and quarantining contacts, removing or recalling contaminated sources, improving sanitation, issuing public advisories, and initiating vaccination or environmental controls as needed. These steps focus on reducing ongoing transmission and building resilience against future outbreaks.

Descriptive data collection and lab testing are essential for understanding the outbreak, but they typically occur earlier in the investigation to identify the cause and scope. Writing a research paper isn’t part of the real-time response; the priority during intervention is to enact and coordinate measures that control the outbreak now and in the future.