Abhay R. Satoskar is Associate Professor of Microbiology at the Ohio State University, Columbus. Gary L. Simon is the Walter G. Ross Professor of Medicine and Director of the Division of Infectious Diseases at The George Washington University School of Medicine. He is also Vice-Chairman of the Department of Medicine. Dr. Simon is also Professor of Microbiology, Tropical Medicine and Immunology. Peter J. Hotez is Distinguished Research Professor and the Walter G. Ross Professor and Chair of the Department of Microbiology, Immunology and Tropical Medicine at The George Washington University, where his major research and academic interest is in the area of vaccine development for neglected tropical diseases and their control. Moriya Tsuji is Aaron Diamond Associate Professor and Staff lnvestigator, HN and Malaria Vaccine Program at the Aaron Diamond AIDS Research Center, The Rockefeller University, New York.