(Same as Community Health Sciences M248.) Lecture, four hours. Strongly recommended requisite: Public Health 200A, 200B. Recommended requisite: course 240 or Community Health Sciences 200. Primary Health care (PHC) is considered to be foundation of all health systems and should be able to resolve 80 percent or more of population's health problems. Overview of organization, structure, and functions of primary health care with emphasis on low- and middle-income country settings. Study of history and origins of PHC, roles and functions of PHC in health systems, different organizational and managerial approaches to organizing and delivering health care within PHC framework, and tools for measuring how well PHC programs and services are functioning. Review and critical analysis of evidence-based on PHC effectiveness and impact and present detailed case studies of PHC programs in diverse settings around world. Letter grading.