I think you mean "herd immunity". https://en.wikipedia.org/wiki/Herd_immunity https://en.wikipedia.org/wiki/Herd_immunity "Herd Mentality" is something else:

I think you mean "herd immunity". https://en.wikipedia.org/wiki/Herd_immunity https://en.wikipedia.org/wiki/Herd_immunity "Herd Mentality" is something else: https://en.wikipedia.org/wiki/Herd_mentality https://en.wikipedia.org/wiki/Herd_mentality Also, it is not that enough people will get sick, but that enough people cannot pass on the sickness. This is a subtly different but important distinction and is why getting vaccinated is important for the community not just the individual.