What term refers to the effort to control disease in progress; taking action during an event?

• A. Intervention
• B. Pathogenicity
• C. Zoonoses
• D. Etiology

Answer: (A)

In public health, the term for actions taken to control a disease while it is in progress is intervention. This captures the active management of an outbreak or health event as it unfolds, with the goal of altering its course and reducing harm. Interventions include clinical treatment for patients, isolation or quarantine when appropriate, contact tracing, public advisories, and measures like vaccination campaigns or environmental controls implemented during the event.

The other terms describe different aspects of disease rather than the action taken during an event. Pathogenicity refers to how capable a microbe is of causing disease (its virulence), zoonoses describe diseases that can be transmitted from animals to humans, and etiology means the cause or origin of a disease. None of these emphasize the corrective actions taken during an ongoing outbreak, which is why intervention best fits the question.