Investigators at the National Cancer Institute (NCI) have discovered an adjuvanted mucosal subunit vaccine to prevent SARS-CoV-2 transmission and infection. The mucosal vaccine is composed of a novel molecular adjuvant nanoparticle that induces robust humoral and cellular immunity, as well as trained innate immunity with enhanced protection against respiratory SARS-CoV-2 exposure. The technology is available for potential licensing or collaborative research to co-develop these therapeutic targets.