Prior infection with SARS-CoV-2 boosts and broadens Ad26.COV2.S immunogenicity in a variant-dependent manner

Roanne Keeton, Simone I. Richardson, Thandeka Moyo-Gwete, Tandile Hermanus, Marius B. Tincho, Ntombi Benede, Nelia P. Manamela, Richard Baguma, Zanele Makhado, Amkele Ngomti, Thopisang Motlou, Mathilda Mennen, Lionel R. Chinhoyi, Sango Skelem, Hazel Maboreke, Deelan Doolabh, Arash Iranzadeh, Ashley Otter, Tim Brooks, Mahdad Noursadeghi, James Moon, Alba Grifoni, Daniela Weiskopf, Alessandro Sette, Jonathan M. Blackburn, Nei‐Yuan Hsiao, Carolyn Williamson, Catherine Riou, Ameena Goga, Nigel Garrett, Linda‐Gail Bekker, Glenda Gray, Ntobeko Ntusi, Penny L. Moore, Wendy A. Burgers