$OCGN Ya all read about the nasel spray right? It covers the upper respiratory while the injection of Covaxin cover the lower part. I did! It's very exciting news.
$OCGN "The spike protein is under intense immune pressure from vaccine-induced antibody which drives evolution of vaccine escape mutants. In contrast, the internal proteins targeted by the protective T cells we identified mutate much less. Consequently, they are highly conserved between the various SARS-CoV-2 variants, including omicron.