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One Health

A guide designed to provide general information and useful resources about the One Health paradigm.


The official One Health definition developed by the United Nations One Health High Level Expert Panel (OHHLEP) states:

"One Health is an integrated, unifying approach that aims to sustainably balance and optimize the health of people, animals and ecosystems.

It recognizes the health of humans, domestic and wild animals, plants, and the wider environment (including ecosystems) are closely linked and inter-dependent.

The approach mobilizes multiple sectors, disciplines and communities at varying levels of society to work together to foster well-being and tackle threats to health and ecosystems, while addressing the collective need for clean water, energy and air, safe and nutritious food, taking action on climate change, and contributing to sustainable development." 

(Joint Tripartite (FAO, OIE, WHO) and UNEP Statement, 2021)

How to Use the One Health Guide

Because of the transdisciplinary nature of the One Health concept, research into this topic may span the sciences, including: biology, ecology, epidemiology, environmental science, public health, veterinary medicine, virology, zoology, and many other disciplines. This guide is intended to provide a starting point for research into this topic, but is not exhaustive.

The guide is primarily organized into the general One Health sectors. The Overview page includes books, journals, and other resources that apply to the One Health paradigm as a whole. Each of the three main sectors of One Health has a dedicated page where you will find pertinent databases and other resources relating to that focus area: Animal Health, Environmental Health, and Human Health. Tools to keep abreast of developments on this topic can be found on the Current Awareness page. Lastly, the Get Involved page contains links to educational and engagement opportunities related to One Health.

International Agencies and Organizations

National/Regional Agencies and Organizations




World Organisation for Animal Health: What is One Health? From concept to action (2.15 minutes)

Simpleshow Foundation: What is One Health? (2.29 minutes)

Ravenswood Media, Inc: One Health - Linking Human, Animal and Ecosystem Health (3.10 minutes)