Public Health Definition

What Is Public Health?

Public health is the science of preserving and improving the health of entire populations through the promotion of healthy lifestyles, the prevention of diseases and injuries, and the control of infectious diseases. These populations can be as small as a local neighborhood, or as large as an entire country or region of the world.

Public health professionals implement educational programs, recommend policies, administer services and conduct research — in contrast to clinical health care providers who traditionally focus on treating individuals after they become sick or injured.

Public health also works to limit health disparities by promoting health care equity, quality and accessibility.

The COVID-19 pandemic has made public health the nation’s number one priority. According to the American Public Health Association, data proves that when the nation’s actions during a public health crisis are backed by science, the health outcomes for the nation improve. Following public health guidance to wear a mask, social distance and washing hands has helped to reduce COVID-19 infections, hospitalizations and deaths. Expanding access to COVID-19 testing and the administration of FDA authorized vaccines has helped public health workers protect the communities where they work and live. 

Videos About Public Health

This is Public Health (Association of Schools of Public Health):

Public Health Logo Video (National Association of County and City Health Officials):

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