vaccine
văk-sēn′, văk′sēn″
noun
A preparation of a weakened or killed pathogen, such as a bacterium or virus, or of a portion of the pathogen's structure that upon administration to an individual stimulates antibody production or cellular immunity against the pathogen but is incapable of causing severe infection.
14 CLINICAL PHARMACOLOGY
14.1 Mechanism of Action
The modRNA in the Pfizer-BioNTech COVID-19 Vaccine is formulated in lipid particles, which enable delivery of the RNA into host cells to allow expression of the SARS-CoV-2 S antigen.
So the covid vaccine isn’t a vaccine at all. It’s an experimental prophylactic treatment.