monovalent
adjective
mono·va·lent
ˌmä-nə-ˈvā-lənt 
1
: having a valence of one
2
: having specific immunologic activity against a single antigen, microorganism, or disease
a monovalent vaccine
Examples of monovalent in a Sentence
Recent Examples on the Web
In June, an advisory committee to the FDA recommended that this fall’s booster be a monovalent vaccine—targeting only the then-dominant XBB.1.5 subvariant.
—
Emily Mullin, WIRED, 12 Sep. 2023
In June, the FDA’s Vaccines and Related Biological Products Advisory Committee unanimously voted that the fall 2023 COVID booster should be a monovalent vaccine that targets the XBB.1.5 strain of the Omicron variant.
—Maggie Scales, BostonGlobe.com, 22 Aug. 2023
And a monovalent vaccine could provide better protection against current variants: With the bivalent booster, patients’s immune systems react more to the original strain, hindering their response to newer ones, David Ho, a microbiologist and immunologist at Columbia University, tells CNN.
—Will Sullivan, Smithsonian Magazine, 16 June 2023
Remainder of Vaccinated Population - Most people depending on age who were previously vaccinated with a monovalent jab and who haven’t yet received a bivalent vaccine can now get a single bivalent dose, the FDA said.
—Travis Andersen, BostonGlobe.com, 18 Apr. 2023
See all Example Sentences for monovalent 
Emily Mullin, WIRED, 12 Sep. 2023
In June, the FDA’s Vaccines and Related Biological Products Advisory Committee unanimously voted that the fall 2023 COVID booster should be a monovalent vaccine that targets the XBB.1.5 strain of the Omicron variant.
—Maggie Scales, BostonGlobe.com, 22 Aug. 2023
And a monovalent vaccine could provide better protection against current variants: With the bivalent booster, patients’s immune systems react more to the original strain, hindering their response to newer ones, David Ho, a microbiologist and immunologist at Columbia University, tells CNN.
—Will Sullivan, Smithsonian Magazine, 16 June 2023
Remainder of Vaccinated Population - Most people depending on age who were previously vaccinated with a monovalent jab and who haven’t yet received a bivalent vaccine can now get a single bivalent dose, the FDA said.
—Travis Andersen, BostonGlobe.com, 18 Apr. 2023
See all Example Sentences for monovalent
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'monovalent.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Monovalent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/monovalent. Accessed 27 Jul. 2024.
Copy CitationMedical Definition
monovalent
adjective
mono·va·lent
ˌmän-ə-ˈvā-lənt
1
: having a chemical valence of one
2
: containing antibodies specific for or antigens of a single strain of a microorganism
a monovalent vaccine
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