Threshold for herd immunity for select diseases 2013
This statistic displays the herd immunity threshold of several select diseases worldwide as of 2013. During this time, the herd immunity threshold of mumps was between 75 and 86 percent. The herd immunity threshold refers to the proportion of immune individuals within a population that can prevent the disease. When a disease is more easily transmittable, the threshold is higher, which requires broad vaccination coverage and effectiveness.