David Schlossberg, MD, FACP, is Professor of Medicine at Temple University School of Medicine in Philadelphia, Adjunct Professor of Medicine at the University of Pennsylvania School of Medicine in Philadelphia, and Director of the Tuberculosis Control Program for the Philadelphia Department of Public Health. He is a Fellow of the American College of Physicians and a Fellow of the Infectious Diseases Society of America. In addition to winning numerous teaching awards, he has been invited to lecture throughout the United States and East Asia. He is a reviewer for a number of medical journals, including the New England Journal of Medicine, Clinical Infectious Diseases, the Annals of Internal Medicine, The Journal of Infectious Disease, and JAMA, and has written or edited 20 books in the area of Infectious Disease.