David A. Relman, MD is the Thomas C. and Joan M. Merigan Professor in Medicine, and Microbiology & Immunology, and Co-Director of the Center for International Security and Cooperation at Stanford University. He is also Chief of Infectious Diseases at the Veterans Affairs Palo Alto Health Care System in Palo Alto, California. Dr. Relman’s research focus is the human indigenous microbiota, and the identification of previously-unrecognized microbial agents of disease. He has advised the U.S. Government on emerging infectious diseases, human-microbe interactions, and future biological threats. He is Chair of the Forum on Microbial Threats at the Institute of Medicine (National Academies of Science) and Past President of the Infectious Diseases Society of America. He is a Fellow of the American Academy of Microbiology, and a Member of the Institute of Medicine.