the.com/immunization
Teaching your immune system the threat's face before the threat shows up armed.
means The process of making a body resistant to a disease, usually by vaccination that primes the immune system.
from From Latin immunis, exempt from public duty, where in- (not) meets munus (obligation, service) — your body excused from paying disease its tax.
Word borrowedSame root gave us community and municipal.
First trialEdward Jenner used cowpox on a boy, 1796.
Herd effectEnough vaccinated people shield the unvaccinated too.
Eradication proofSmallpox erased from earth by 1980.