Yeah we did and it's BS. it has to "evolve" when the dunces realized it wasn't working. Hilarious. Look no one likes being duped so I get why have to keep pushing the BS. But encouraging people to be duped like you were is inappropriate at best and dangerous at worse.
Merely unsupported assertions -
Historically, in ~1800, the word "vaccine" originated from the cowpox virus, called vaccinia. A "doctor took pus from the cowpox lesions on a milkmaid’s hands and introduced that fluid into a cut he made in the arm of an 8-year-old boy named James Phipps". ( smallpox was a killer )
Vaccine: any preparation used as a preventive inoculation to confer immunity against a specific disease, usually employing an innocuous form of the disease agent, as killed or weakened bacteria or viruses, to stimulate antibody production.
Vaccine: suspension of weakened, killed, or fragmented microorganisms or toxins or of antibodies or lymphocytes that is administered primarily to prevent disease.
From the CDC:
Vaccine: A product that stimulates a person's immune system to produce immunity to a specific disease, protecting the person from that disease.