Herd Immunity

Herd immunity or community immunity refers to the process in which all people are protected against a vaccine-preventable disease because most of the community is vaccinated.

For more information:
 * Community Immunity
 * Herd Immunity
 * Yes, herd immunity works
 * Herd Immunity
 * You can't hide in the herd
 * The power of herd immunity seen with the rotavirus vaccine
 * Demonstration of "Herd Immunity"
 * Opting-Out Of Vaccines; Dipping Below Herd Immunity