Julie E. Martin, Nancy J. Sullivan, Mary E. Enama, Ingelise J. Gordon, Mario Roederer, Richard A. Koup, Robert T. Bailer, Bimal K. Chakrabarti, Michael A. Bailey, Phillip L. Gomez, Charla A. Andrews, Zoe Moodie, Lin Gu, Judith A. Stein, Gary J. Nabel, Barney S. Graham, the VRC 204 Study Team‡The VRC 204 Study Team includes Margaret M. McCluskey, Brenda Larkin, Sarah Hubka, Lasonji Holman, Laura Novik, Pamela Edmonds, Steve Rucker, Michael Scott, Colleen Thomas, LaChonne Stanford, Ed Tramont, Woody Dubois, Tiffany Alley, Erica Eaton, Sandra Sitar, Ericka Thompson, Andrew Catanzaro, Joseph Casazza, Janie Parrino, Laurence Lemiale, Rebecca Sheets, Ellen Turk, Laurie Lamoreaux, Jennifer Fischer, Mara Abashian, John Rathmann, and Adrienne McNeil.