COVID-19 Supplemental Vaccine Boost to Enhance T Cell Protection in Those Who Have Already Received EUA S-Based Vaccines

Vaccine containing both full length wild type SARS-CoV-2 spike gene optimized for better spike protein expression, and full length wild type SARS-CoV-2 nucleocapsid gene modified to also contain an enhanced T cell stimulation domain (ETSD) to enhance cell-mediated immunity.