When you get vaccinated, your body learns to develop the antibodies to fight COVID without actually getting infected or risking complications. Vaccines have created and maintained herd immunity for other serious contagious diseases like smallpox, polio, diphtheria, rubella, and many others.

SOURCE: https://www.mayoclinic.org/diseases-conditions/coronavirus/in-depth/herd-immunity-and-coronavirus/art-20486808 (Mayo Clinic)

Updated 12/16/2021