ALL meanings of herd immunity
herd im·mu·ni·ty
H h - noun herd immunity the immunity or resistance to a particular infection that occurs in a group of people or animals when a very high percentage of individuals have been vaccinated or previously exposed to the infection. 1
- noun herd immunity (epidemiology) The protection given to a community against an epidemic of a contagious disease when a sufficient number of the population are immunised or otherwise develop immunity to it. 0