Clarisa B. Palatnik-de-Sousa1,2*
1 Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil, 2 Institute for
Research in Immunology, Faculty of Medicine, University of São Paulo (USP), São Paulo, Brazil
Keywords: COVID19, SARS-CoV2, inactivated virus vaccines, QS21 saponins, universal vaccine