Dr. James Thomas has more than 35 years of experience working in the field of public health. He earned his doctoral degree in epidemiology from UCLA. Over the course of his career, Dr. Thomas has been a nutritionist, program implementer, professor, researcher, technical advisor, manager, policy advisor, and founder of two nonprofit organizations. He has lived in the Democratic Republic of the Congo and Kenya, and has worked in more than two dozen countries of Africa and Asia. As a professor of epidemiology at the University of North Carolina, his principal interests are in the social epidemiology of HIV/AIDS, and public health ethics and human rights. In addition to his scholarly articles, he was an editor and author of a textbook on epidemiologic methods in the study of infectious diseases, and principal author of the American Public Health Association’s Code of Ethics. As Director of the USAID funded MEASURE Evaluation Project, Dr. Thomas is leading a global team that is advancing the capacity of countries and communities to collect and use data to guide public health policies and programs. Dr. Thomas brings to this effort a particular interest in complexity science and systems thinking. Two examples from his own work are organizational network analysis to improve coordination of disease control efforts, and the evaluation of structural interventions.