What Is Epidemiology?
epidemiology is cognation of phenomenons
to introduce EPIDEMIOLOGY I decided catch a scrap of one of the well known books about this issue: EPIDEMILOGY written by Leon Gordis.
Epidemiology is the study of how disease is distributed in populations and the factors that influence or determine this distribution. Why does a disease develop in some people and not in others? The premise underlying epidemiology is that disease, illness, and ill health are not randomly distributed in a population. Rather, each of us has certain characteristics that predispose us to, or protect us against, a variety of different diseases. These characteristics may be primarily genetic in origin or may be the result of exposure to certain environmental hazards. Perhaps most often, we are dealing with an interaction of genetic and environmental factors in the development of disease. A broader definition of epidemiology than that given above has been widely accepted. It defines epidemiology as “the study of the distribution and determinants of health-related states or events in
specified populations and the application of this study 1to control of health problems.”
What is noteworthy about this definition is that it includes both a description of the content of the discipline and the purpose or application for which epidemiologic investigations are carried out.
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