Jonna Mazet

Jonna Ann Keener Mazet (born December 18, 1967) is an American veterinarian, epidemiologist and a Distinguished Professor of Epidemiology and Disease Ecology at the University of California, Davis. Since 2021, she has served as the Vice Provost of Grand Challenges at the University of California, Davis. UC Davis Grand Challenges focuses on developing climate solutions, preventing and responding to emerging health threats, promoting sustainable food systems, and reimagining the role of land-grant universities. Dr. Mazet is known for her contributions to operationalizing the One Health approach, which is now a component of the Quadripartite Organizations core mandates for addressing health challenges. In 2009, Dr. Mazet founded the One Health Institute at the University of California, Davis and served as the Executive Director until July 2020. She is an elected member of the National Academy of Medicine and a fellow of the American Association for the Advancement of Science.