Community Health Nursing subject study on concept and principles of public healthcare, including the structure of the healthcare system in Thailand.  Public health problems, concept of the community, working in the community, and the development of the capacity of the community to participate in healthcare. Community health nursing for health problems in a variety of settings: the family, school, workplace, and community. Application of the community health nursing process in the promotion of health, protection against illness, control of disease, and rehabilitation. Concepts and principles of epidemiology. Ethics and laws related to nursing care.