Innovative vaccine approaches-a Keystone Symposia report -н Cable, J, Rappuoli, R, Klemm, EJ, Kang, G, Mutreja, A, Wright, GJ, Pizza, M, Castro, SA, Hoffmann, JP, Alter, G, Carfi, A, Pollard, AJ, Krammer, F, Gupta, RK, Wagner, CE, Machado, V, Modjarrad, K, Corey, L, B Gilbert, P, Dougan, G, Lurie, N, Bjorkman, PJ, Chiu, C, Nemes, E, Gordon, SB, Steer, AC, Rudel, T, Blish, CA, Sandberg, JT, Brennan, K, Klugman, KP, Stuart, LM, Madhi, SA, Karp, CL