Please read and agree to the disclaimer before watching this video. . Nasal COVID Vaccines – GAME CHANGERS Nasal vaccines will be delivered via nasal route via a nasal spray. These spays contain the replication deficient Adenovirus that contains genes some of the SARS-COV-2 antigens, or these are synthetic particles with viral antigens on them. Let’s review the technology and the progress so far by these companies.