Now And Then With Glenn featuring Kathryn Stephenson, MD, MPH. Dr. Stephenson is an Associate Professor of Medicine at Harvard Medical School and a physician-scientist at the Center for Virology and Vaccine Research and the Division of Infectious Diseases at Beth Israel Deaconess Medical Center. She is also an Associate Member of the Ragon Institute of Mass General, MIT and Harvard and the Massachusetts Consortium on Pathogen Readiness.