Herd immunity
A) only occurs in a population in which all individuals are immune.
B) occurs in a population in which a large percentage of the population is immune.
C) only provides protection to those that are already immune.
D) is responsible for dramatic increases in childhood diseases.
E) occurs in a population in which a large percentage of the population is immune AND is responsible for dramatic increases in childhood diseases.

Question

Quizplus · Accepted Answer

Herd immunity occurs in a population in which a large percentage of the population is immune. This prevents the spread of infectious diseases, even to those who are not immune, because the likelihood of coming in contact with an infected individual is greatly reduced. Herd immunity is a crucial factor in preventing outbreaks of diseases, especially those that can be prevented through vaccination.

Herd Immunity