R.E.N. Spells Ren
Veteran
vac·cine
/vakˈsēn/
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noun
- a substance used to stimulate the production of antibodies and provide immunity against one or several diseases, prepared from the causative agent of a disease, its products, or a synthetic substitute, treated to act as an antigen without inducing the disease.
"every year the flu vaccine is modified to deal with new strains of the virus"
flu virus evolves every year that's why they have to keep making new vaccinations
but after two weeks of taking you have immunity
that's not the case with covid
Why don’t you try a real dictionary instead of Google since you want to be all literal…
Definition of vaccine
1: a preparation that is administered (as by injection) to stimulate the body's immune response against a specific infectious agent or disease: such as
a: an antigenic preparation of a typically inactivated or attenuated (see ATTENUATEDsense 2) pathogenic agent (such as a bacterium or virus) or one of its components or products (such as a protein or toxin)
Link: Definition of VACCINE