Determinants of antibody persistence across doses and continents after single-dose rVSV-ZEBOV vaccination for Ebola virus disease: an observational cohort study by Huttner, A, Agnandji, S, Combescure, C, Fernandes, J, Bache, E, Kabwende, L, Ndungu, F, Brosnahan, J, Monath, T, Lemaître, B, Grillet, S, Botto, M, Engler, O, Portmann, J, Siegrist, D, Bejon, P, Silvera, P, Kremsner, P, Siegrist, C, Krishna, S, Addo, M, Becker, S, Krähling, V, Njuguna, P, Kieny, M, Ahmed, R, Anderson, J, Auderset, F, Borgianni, L, Ciabattini, A, Haks, M, Harandi, A, Heppner, D, Gerlini, A, Medaglini, D, Ottenhoff, T, Pejoski, D, Page, M, Pozzi, G, Santoro, F, Dubey, S, Fernandes, J, Nakaya, H, Orourke, F, Pozzi, G, Rothenberger, S