A newly licensed nurse working at an HIV clinic is reviewing the responsibilities of her position at the clinic. Which of the following tasks should the nurse identify as tertiary prevention?

A. Providing clients with information about the benefits of exercise: Educating clients on exercise is an example of primary prevention, aimed at promoting overall health and preventing the onset of disease in healthy individuals. B. Using an electronic messaging system to remind clients when to take medications: This is an example of tertiary prevention because it helps manage an existing condition (HIV) and prevents complications by promoting adherence to treatment, reducing disease progression and related morbidity. C. Helping clients understand health screenings covered by their insurance plans: Assisting clients with preventive screenings falls under secondary prevention, which focuses on early detection and prompt intervention to reduce disease impact. D. Educating clients about contraindications to specific immunizations: Teaching about vaccine contraindications is part of primary prevention, aiming to prevent illness before it occurs by ensuring safe immunization practices.