Dictionary Thesaurus Word Dynamo Quotes Reference Translator Spanish

herd immunity

noun

the immunity that occurs when an entire group of animals or people become immune to a particular infection, as with universal vaccination.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source

Link To herd immunity

American Heritage

Medical Dictionary

herd immunity 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.
Cite This Source

Word Dynamo By Dictionary.com

Searching for herd immunity?
How many words do you actually know?

FIND OUT

Matching Quote

"Housework is work directly opposed to the possibility of human self-actualization."

-Ann Oakley

Partners:Word Bloglines Citysearch The Daily Beast Ask Answers Ask Kids Life123 Sendori Thesaurus

About Privacy Policy Terms of Use API Careers Advertise with Us Contact Us Help