Competing interests
J.S.H., H.R.S., A.N., H.-G.R. and J.S.W. are listed as inventors on a patent related to the SARS-CoV-2 T-cell epitopes included in CoVac-1. H.-G.R. and K.-H.W. are listed as inventor on a patent related to the adjuvant XS15 included in CoVac-1. The other authors declare no competing interests.