Secondary prevention involves ...

• A. Immunization of susceptible groups
• B. Screenings for high-risk subjects to detect disease
• C. Rehabilitation to reduce disability
• D. Health promotion campaigns

Answer: (D)

Secondary prevention focuses on detecting disease early in people who may not yet have noticeable symptoms, so treatment can start promptly to halt progression and prevent complications. This is achieved through screenings aimed at high-risk individuals to identify disease at an earlier, more treatable stage. Health promotion campaigns and immunization are examples of primary prevention, aimed at preventing disease from developing in the first place, while rehabilitation to reduce disability is a tertiary step taken after disease has already caused health problems.