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herd immunity Line breaks: herd im¦mun|ity

Definition of herd immunity in English:

noun

[mass noun]
The resistance to the spread of a contagious disease within a population that results if a sufficiently high proportion of individuals are immune to the disease, especially through vaccination: the level of vaccination needed to achieve herd immunity varies by disease
More example sentences
  • The vaccination is seen as a way to achieve herd immunity as it stops the spread of the illness from children to others that are vulnerable to flu.
  • Children whose parents opt not to vaccinate decrease herd immunity, which protects populations from communicable diseases.
  • They found no evidence that vaccination prevents viral transmission, putting the whole herd immunity myth once again into question.

Definition of herd immunity in:

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