Dr. William (Billy) Karesh is the Executive Vice President for Health and Policy for
EcoHealth Alliance. He serves as the inter-project liaison for the USAID Emerging
Pandemic Threats PREDICT-2 program (a $140M effort to prevent infectious diseases in
30 countries) and is a member of World Health Organization’s IHR Roster of Experts.
Dr. Karesh also serves as the President of the World Organization for Animal Health
(OIE) Working Group on Wildlife. In 2016, he was appointed as a member of the
Council on Foreign Relations.
Dr. Karesh has pioneered initiatives focusing attention and resources on solving problems
created by the interactions among wildlife, people, and their animals. In 2003, he coined
the term "One Health" to describe the interdependence of healthy ecosystems, animals
and people and the term has been adopted by many organizations, including the United
Nations and the World Bank, in local and global health efforts. Dr. Karesh has created
dozens of initiatives to encourage linkages among public health, agriculture and
environmental health agencies and organizations around the world. He has personally
lead programs and projects in over 45 countries, covering terrain from Argentina to
In addition to his work in the private non-profit sector, Dr. Karesh has also worked for
the USDA, DOD and DOI. He served as a consultant for the Food and Agriculture
Organization of the U.N., and is currently on the Steering Committee of OFFLU (OIEFAO
Network of Expertise for Animal Influenzas). Dr. Karesh is internationally
recognized as an authority on the subject of animal and human health linkages and
wildlife. He has published over one hundred and eighty scientific papers and numerous
book chapters, and written for broader audience publications such as Foreign Affairs.