**Acknowledgements**

The authors thank Joanna Żebrowska and Edyta Raczuk for providing the unpublished data, concerning SARS-CoV-2 vaccine. The authors also thank Olga Żołnierkiewicz, Natalia Krawczun, Daria Krefft, Joanna Żebrowska, Beata Łubkowska and all the others who have contributed to the development and validation the DNA-FACETM technology. Jakub Zaleski is appreciated for English corrections. This work was supported by the National Center for Research and Development (Poland) [grant numbers: POIG.01.04.00-22-140/12 to BioVentures Institute Ltd. (Poznan, Poland), STRATEGMED1/235077/9/NCBR/2014 to University of Gdansk, Faculty of Chemistry, Molecular Biotechnology Department and BioVentures Institute Ltd., and TECHMATSTRATEG2/410747/11/NCBR/2019.
