Merck Manual

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One Health


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.

- As defined by the CDC


Explore our Q & A, co-authored by one of our physician editors, Ernest Yeh, MD, and Veterinary Manual editor, Nicholas Roman, DVM, MPH. 


Relevant Content



The Power of One Health

Student Veterinary Blogger, Maria E.


One Health for All Species

Student Veterinary Blogger, Andrew L.


One Health: Where Human and Veterinary Medicine Combine

Student Physician Blogger, Cidney L.



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