Comprehensive versus selective primary health care: lessons for global health policy.

Primary health care was declared the model for global health policy at a 1978 meeting of health ministers and experts from around the world. Primary health care requires a change in socioeconomic status, distribution of resources, a focus on health system development, and emphasis on basic health services. Considered too idealistic and expensive, it was replaced with a disease-focused, selective model. After several years of investment in vertical interventions, preventable diseases remain a major challenge for developing countries. The selective model has not responded adequately to the interrelationship between health and socioeconomic development, and a rethinking of global health policy is urgently needed.