Immunogenicity and reactogenicity of novel adenovirus type 26 and modified vaccinia Ankara-vectored Ebola vaccines: A randomized clinical trial by Milligan, I, Gibani, M, Sewell, R, Clutterbuck, E, Campbell, D, Plested, E, Nuthall, E, Voysey, M, Silva Reyes, L, McElrath, M, De Rosa, S, Frahm, N, Cohen, K, Shukarev, G, Orzabal, N, van Duijnhoven, W, Truyers, C, Bachmayer, N, Splinter, D, Samy, N, Grazia Pau, M, Schuitemaker, H, Luhn, K, Callendret, B, Van Hoof, J, Douoguih, M, Ewer, K, Angus, B, Pollard, A, Snape, M