An example of Disease Prevention is:

• A. Immunization
• B. Genetic counseling
• C. Adequate housing
• D. Periodic selective examination

Answer: (A)

Primarily, this item tests primary prevention by preventing disease before it starts. Immunization stimulates the body's immune response to pathogens, so vaccinated individuals are less likely to become ill, and the concept of herd immunity helps protect the community as a whole by reducing transmission. Genetic counseling can reduce the risk of inheriting conditions and inform reproductive choices, but it centers on risk assessment and decision-making rather than directly preventing a specific disease from occurring. Adequate housing supports overall health and addresses social determinants, yet it isn’t a direct intervention that prevents a particular disease. Periodic selective examination is screening to detect disease early, which is secondary prevention. Thus immunization best exemplifies disease prevention.