Efficacy, safety, and immunogenicity of a booster regimen of Ad26.COV2.S vaccine against COVID-19 (ENSEMBLE2): results of a randomised, double-blind, placebo-controlled, phase 3 trial

Karin Hardt, An Vandebosch, Jerald Sadoff, Mathieu Le Gars, Carla Truyers, D. Lowson, Ilse Van Dromme, Johan Vingerhoets, Tobias Kamphuis, Gert C. Scheper, Javier Ruiz‐Guiñazú, Saul N. Faust, Christoph D. Spinner, Hanneke Schuitemaker, Johan Van Hoof, Macaya Douoguih, Frank Struyf, Brian T. Garibaldi, Timothy E. Albertson, Christian Sandrock, Janet Lee, Mark R. Looney, Victor F. Tapson, Charles Shey Wiysonge, Luis Humberto Anaya Velarde, Daniel Backenroth, Jisha Bhushanan, Börries Brandenburg, Vicky Cárdenas, Bohang Chen, Fei Chen, Polan Chetty, Pei-Ling Chu, Kimberly L. Cooper, Jerome Custers, Hilde Delanghe, A. Duca, Tracy Henrick, Jarek Juraszek, Catherine Nalpas, Monika Peeters, José Cirı́aco Pinheiro, Sanne Roels, Martin Ryser, José A. Salas, Samantha Santoro Matias, Ilse Scheys, Pallavi Shetty, Georgi Shukarev, Jeffrey J. Stoddard, Willem Talloen, NamPhuong Tran, Nathalie Vaissière, Elisabeth van Son-Palmen, Jiajun Xu, Erin A. Goecker, Alexander L. Greninger, Keith R. Jerome, Pavitra Roychoudhury, Simbarashe Takuva, J.L. Mendoza, Eric D. Achtyes, Habibul Ahsan, Azhar Alhatemi, Nancy A. Allen, José Ramón Arribas, Ghazaleh Bahrami, Lucía Bailón, Ali Ahsan Bajwa, Jonathan Baker, Mira Baron, Susana Benet, Driss Berdaï, Patrick Berger, Todd Bertoch, Claire Bethune, Sybille Bevilacqua, Maria Silvia Biagioni Santos, Ian Binnian, Karen Bisnauthsing, Jean‐Marc Boivin, Hilde Bollen, Sandrine Bonnet, Alberto M. Borobia, Élisabeth Botelho-Nevers, Phil Bright, Vianne Britten, Claire Brown, Amanda Buadi, Erik Buntinx, Lesley Burgess, Larry M. Bush, María Rosario Capeding, Quito Osuna Carr, Amparo Carrasco Mas, Hélène Catalá, Katrina Cathie, T S Caudill, Fernando Cereto Castro, Kénora Chau