Herd Immunity, also called community immunity, is a situation in which a sufficient proportion of a population is immune to an infectious disease (through vaccination and/or prior illness) to make its spread from person to person unlikely.
Even individuals not vaccinated (such as newborns and those with chronic illnesses) are offered some protection because the disease has little opportunity to spread within the community. From the Centers for Disease Control and Prevention
Basic Medical Language, 7th Edition, by Danielle LaFleur Brooks and Myrna LaFleur Brooks , and Dale Levinsky.
This textbook fully engages the student in learning and using medical terminology. Ideal for 1 or 2 credit college courses, highschools, private schools, and self-learning.
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