Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An additional dose of an immunizing agent, such as a vaccine or toxoid, given at a time after the initial dose to sustain the immune response elicited by the previous dose of the same agent.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
dose of anantigen designed tostrengthen immunity after an earlierimmunizing dose.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an additional dose that makes sure the first dose was effective
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