When considering health strategies, which measure is an example of tertiary prevention?

Tertiary prevention focuses on managing and mitigating the effects of already established diseases or health conditions to improve quality of life and reduce further complications. Rehabilitation services exemplify this concept as they aim to assist individuals recovering from serious health events, such as strokes, injuries, or surgeries. These services can include physical therapy, occupational therapy, and various support systems aimed at helping patients regain their independence and functionality.

In contrast, the other options represent different levels of prevention. Promoting vaccination is an example of primary prevention, as it works to prevent the onset of disease. Providing dietary counseling generally falls under secondary prevention, focusing on early detection and management of conditions like obesity or diabetes before they progress. Community health fairs typically aim at health education and screenings, which also align more closely with primary or secondary prevention strategies.