One Health

Last Modified: May 27, 2026
Wildlife Services employee wearing blue latex gloves holding a duck

One Health is an integrated, unifying approach that optimizes the health of people, plants, domestic and wild animals, and ecosystems.

One Health is a collaborative, multisectoral, and transdisciplinary approach — working at the local, regional, national, and global levels — with the goal of achieving optimal health outcomes recognizing the interconnection between people, animals, plants, and their shared environment. (U.S. Government Definition, established 2017)

To promote the adoption and use of this definition, USG One Health partners are working to highlight it on their public websites. Both sites already include similar language, so this is a minor change to harmonize it across partners. Examples include:

Priority Issues

Protecting animal and plant health intersects with some of the most pressing issues of our time: diseases that can spread between animals and people, global population growth, and food security. One Health is key in finding solutions. Learn how we're advancing One Health practice through research, applied science, and other initiatives.

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