vaccine
[vakˈsēn]
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” · [more]
synonyms:
inoculation · immunization · vaccination · jab · shot · injection · booster
computing
a program designed to detect computer viruses and inactivate them.
CDC says:
Vaccine: A preparation that is used to stimulate the body’s immune response against diseases. Vaccines are usually administered through needle injections, but some can be administered by mouth or sprayed into the nose.
https://www.cdc.gov/vaccines/vac-gen/imz-basics.htm
i’m vaccinated regularly,,,watch them change the definition.