Ripley Ballou, MD is Vice President and Head, US R&D Center of GSK Vaccines in Rockville, MD. Previously he was Head of Clinical Research and Translational Science, Vaccine Discovery and Development at GSK’s Vaccines headquarters in Rixsensart, Belgium. He has also served as Deputy Director for Vaccines, Infectious Diseases Development, Global Health at the Bill & Melinda Gates Foundation. Dr. Ballou is an expert in vaccine development and has worked in this field for more than 30 years. Trained in Internal Medicine and Infectious Diseases, he began his work on vaccines at the Walter Reed Army Institute of Research where he led the team that with GlaxoSmithKline co-developed RTS,S, the world’s most advanced malaria vaccine. Dr. Ballou has numerous publications in the field of vaccine development and infectious diseases.