As per the definition by World Health Organization Public health refers to “All organized measures (whether public or private) to prevent disease, promote health, and prolong life among the population as a whole. Its activities aim to provide the conditions in which people can be healthy and focus on entire populations, not on individual patients or diseases. Thus, public health is concerned with the total system and not only the eradication of a particular disease. “
There are three chief functions of public health:
Health assessment and monitoring of communities and populations that are likely to detect health problems and preferences.
Making of public health policies devised to resolve detected regional as well a national health problems and preferences.
Ensure all populations availability to proper and inexpensive health care, constituting health promotion and disease pre