When immunization levels in a population are high, _ provides protection from infection for at- risk persons who cannot be immunized.
A) active immunization
B) contact immunity
C) adjuvant therapy
D) herd immunity
E) variolation

Question

Quizplus · Accepted Answer

Herd immunity occurs when a large portion of a community becomes immune to a disease, making the spread of disease from person to person unlikely, thus providing protection for individuals who cannot be vaccinated.

When Immunization Levels in a Population Are High, _ Provides