In community medicine, there are four basic concepts that must be understood well. It was health paradigm, concept of epidemiology, mandala of health, and theory of Blum.
Health paradigm is a view that health is a need. Health paradigm is effective as efforts to prevent people for getting a disease. We know that prevention is more important than cure. To prevent disease, people should consider that health is a need and it is very important. This paradigm can change behavior of the people; so can reduce the risk to be sick. So a healthy person must own health paradigm before they get sick.
The concept of epidemiology is also called H-E-A concept. Incidence of a disease represents a unique combination of several factors: agent, host, and environment. As an illustration, disease can develop because there is dangerous disease agents that attack vulnerable-host in a supportive environment. The emergence of a disease is never caused by one factor but by several factors that form a mesh (epidemiologic web).
Stetoskop 