Which of the following scenarios represents a primary prevention activity?

• A. Performing a home safety check at a client's home
• B. Teaching healthy nutrition to clients who have hypertension
• C. Providing influenza immunizations to employees at a local preschool
• D. Implementing a program to notify individuals exposed to a communicable disease

Answer: (C)

Primary prevention is about preventing disease before it occurs. Giving influenza vaccines to employees at a preschool is a textbook example because vaccination creates immunity before exposure and reduces transmission to children, staff, and families. The other scenarios address different preventive aims: a home safety check prevents injuries, which is injury prevention but not directly about preventing an infectious disease; teaching nutrition to clients with hypertension focuses on managing a known condition rather than preventing disease onset; and notifying people exposed to a communicable disease is a response after exposure intended to limit spread, which is secondary prevention.