Introduction of Epidemiology

Definitions of Epidemiology

• Epidemiology is the Greek word.
• Epi: among, upon
• Demos: people
• Logos: study, knowledge, science.

'According to Mac Mohan 1960 it is defined as "the study of the distribution and determinate of disease frequency man."

Epidemiology as 'the study of the distribution and determinate of health related states or events in specified population and the application of this study to the control of health problems.' - John M, Last, 1988

Center for Diseases Control, US Public Health Services has defined epidemiology as the study of the patterns of diseases and the factors that cause disease in man.