Other terms
Herd Immunity
Description
Immunity, Herd: The non-susceptibility to infection of a large group of individuals in a population. A variety of factors can be responsible for herd immunity and this gives rise to the different definitions used in the literature. Most commonly, herd immunity refers to the case when, if most of the population is immune, infection of a single individual will not cause an epidemic. Also, in such immunized populations, susceptible individuals are not likely to become infected. Herd immunity can also refer to the case when unprotected individuals fail to contract a disease because the infecting organism has been banished from the population.
Pervious tree
Next tree
Other locations in tree
Legal notice
The U.S. National Library of Medicine is the creator, maintainer, and provider of the data above.
The version of the data is 2010 MeSH. Last reviewed April 26, 2010. No modification has been made in the content of the file.
Neither the United States Government, nor any of its agencies, contractors, subcontractors or employees makes any warranties, expressed or implied, with respect to data contained in the database, and, furthermore, assumes no legal liability for any party's use, or the results of such use, of any part of the database.
You will not assert any proprietary rights to any portion of the database, or represent the database or any part thereof to anyone as other than a United States Government database.
The MeSH data carry an international copyright outside the United States, its Territories or Possessions. These terms and conditions are in effect as long as the user retains any of the MeSH data obtained from this site.