Like many aspects of American society, health care delivery is changing, influenced by political and economic pressures, new technologies, and shifting social attitudes and values. Consequently, the practice of public health practitioners must evolve based on needs and the realities of day-to-day practice in primary care and placed-based settings. Efforts to devise effective programs, strategies, and initiatives for health promotion and prevention of diseases and injuries have emerged rapidly with the creation of new opportunities to extend best-practice successes. In this light, public health, primary health care, and community-based care have experienced a renaissance in this country in the 1990's.