| 单词 | herd immunity |
| 释义 | herd immunitynounthe immunity or resistance to a particular infection that occurs in a group of people or animals when a very high percentage of individuals have been vaccinated or previously exposed to the infection. Words nearby herd immunityhercynite, herd, herd-book, herder, herdic, herd immunity, herding dog, herd instinct, herd's-grass, herdsman, herd tester Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Medical definitions for herd immunityherd immunity [ hûrd ] n.Resistance to the spread of infectious disease in a group because susceptible members are few, making transmission from an infected member unlikely. The immunologic status of a population, determined by the ratio of resistant to susceptible members and their distribution. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. |
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