AUTHOR=Tsilika Maria , Taks Esther , Dolianitis Konstantinos , Kotsaki Antigone , Leventogiannis Konstantinos , Damoulari Christina , Kostoula Maria , Paneta Maria , Adamis Georgios , Papanikolaou Ilias , Stamatelopoulos Kimon , Bolanou Amalia , Katsaros Konstantinos , Delavinia Christina , Perdios Ioannis , Pandi Aggeliki , Tsiakos Konstantinos , Proios Nektarios , Kalogianni Emmanouela , Delis Ioannis , Skliros Efstathios , Akinosoglou Karolina , Perdikouli Aggeliki , Poulakou Garyfallia , Milionis Haralampos , Athanassopoulou Eva , Kalpaki Eleftheria , Efstratiou Leda , Perraki Varvara , Papadopoulos Antonios , Netea Mihai G. , Giamarellos-Bourboulis Evangelos J. TITLE=Corrigendum: ACTIVATE-2: A double-blind randomized trial of BCG vaccination against COVID-19 in individuals at risk JOURNAL=Frontiers in Immunology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2022.1018384 DOI=10.3389/fimmu.2022.1018384 ISSN=1664-3224