History of epidemiology. The subject of epidemiology. Tasks of epidemiology. Doctrine of epidemic process. Forms of intensity of the epidemic process. A source of infection. A mechanism of infection transmission. Classifications of infectious diseases

Abstract

The word 'epidemiology' has been used since the time when most of the infectious diseases were epidemic. The development of epidemiology of infectious diseases during the centuries have been governed by public health needs. The definition of epidemiology as a science in various historical periods has relied on the relative authenticity of social phenomena and processes.