If by definition vaccines are supposed to confer immunity, then Covid-19 “vaccines” don’t make the definition of vaccine. From off-guardian.org:
If the Covid19 shots “reduce symptoms”, but don’t prevent infection or transmission…are they truly “vaccines”?
“Vaccine” is a word a with a simple meaning. I’ll quote it to you, from the Oxford dictionary:
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.
And here, from the CDC’s website:
Vaccine: A product that stimulates a person’s immune system to produce immunity to a specific disease, protecting the person from that disease.
You get the point.
A “vaccine” is substance that, when introduced into a body, “provides immunity” to a specific disease. This person, now immune, is therefore incapable of passing that disease on to others. This is the entire point of vaccination.