NCIt definition : A covalently-trimerized fusion protein-based vaccine composed of a C-prodomain peptide
of human collagen covalently bound to the viral spike protein (SP) of severe acute
respiratory syndrome coronavirus-2 (SARS-CoV-2), thereby resembling the native trimeric
viral SP, with potential immunomodulating and anti-COVID-19 activities. Upon intramuscular
administration of the recombinant 2019-nCoV S protein subunit-trimer vaccine SCB-2019,
the SP activates the immune system to create anti-SARS-CoV-2 SP antibodies. The antibodies
recognize and neutralize the SP and kill SARS-CoV-2. This prevents SARS-CoV-2 infection.
SP, usually found on the surface of SARS-CoV-2, plays an essential role in the infection
pathway of the SARS-CoV-2 virus.;