Dr. Mofenson is a pediatric infectious disease specialist who has spent her career doing research on prevention and treatment of pediatric and maternal HIV infection. In 2014, she retired from the U.S. National Institutes of Health after 26 years, where she led many of the key clinical trials on prevention of mother to child transmission and pediatric and maternal treatment. She currently serves as Senior HIV Technical Advisor to the Research Program at the Elizabeth Glaser Pediatric AIDS Foundation, where she is assisting in evaluating implementation of many of the interventions on treatment and prevention that she helped to design while at NIH.