quadrivalent

adjective
quad·​ri·​va·​lent | \ ˌkwä-drə-ˈvā-lənt How to pronounce quadrivalent (audio) , in sense 2 kwä-ˈdri-və-lənt How to pronounce quadrivalent (audio) \

Definition of quadrivalent

 (Entry 1 of 2)

2 : composed of four homologous chromosomes synapsed in meiotic prophase

quadrivalent

noun

Definition of quadrivalent (Entry 2 of 2)

: a quadrivalent chromosomal group

Examples of quadrivalent in a Sentence

Recent Examples on the Web: Adjective Both the trivalent and quadrivalent vaccines given this year protect against the B strain that seems to be popping up most often, but there could still be other strains out there. Kate Morgan, The Cut, "What to Know About Influenza B, the ‘Second Wave’ of Flu Season," 4 Apr. 2018 Both lab and rapid-flu tests show more than 70 percent of patients are testing positive for Influenza B, which historically is less serious than Influenza A and the B strain is covered by this year's quadrivalent flu shot. Bill Hanna, star-telegram, "Finally, this deadly flu season is showing signs of improving in North Texas | Fort Worth Star-Telegram," 2 Mar. 2018 Both the trivalent and quadrivalent vaccines given this year protect against the B strain that seems to be popping up most often, but there could still be other strains out there. Kate Morgan, The Cut, "What to Know About Influenza B, the ‘Second Wave’ of Flu Season," 4 Apr. 2018 Both lab and rapid-flu tests show more than 70 percent of patients are testing positive for Influenza B, which historically is less serious than Influenza A and the B strain is covered by this year's quadrivalent flu shot. Bill Hanna, star-telegram, "Finally, this deadly flu season is showing signs of improving in North Texas | Fort Worth Star-Telegram," 2 Mar. 2018 Typically, trivalent formulations include two A strains and one B strain, and quadrivalent formulations add a second B strain. Susan Scutti, CNN, "CDC panel again advises against FluMist," 21 June 2017 Recent Examples on the Web: Noun For perspective, the price of one’s annual quadrivalent flu shot ranges from $35 - $41, with the more potent shot being almost twice as high. John Lamattina, Forbes, "Surprising Cost For Covid-19 Vaccine Administration," 15 Apr. 2021 Another formulation, a quadrivalent flu vaccine, includes an extra influenza type B strain. Miriam Fauzia, USA TODAY, "Fact check: Trump's past flu vaccinations not linked to increased COVID-19 risk," 21 Oct. 2020 The new feature of this season’s vaccine — and what will be prioritized for those at higher risk — is that instead of being trivalent (protecting against three different strains), the vaccine is quadrivalent (protecting against four strains). Annie Vainshtein, SFChronicle.com, "Flu shots in the Bay Area: where to get yours, and why they’re important during pandemic," 22 Sep. 2020 The shot protects against either three strains (trivalent) or four strains (quadrivalent). Ian Richardson, USA TODAY, "Fact check: Doctors aren't pushing an 'untested' seasonal flu vaccine for the coronavirus," 19 Sep. 2020 One vaccine contains two flu A strains and one flu B strain, called a trivalent vaccine, while the other contains those three strains plus an additional flu B strain, called quadrivalent. Adrianna Rodriguez, USA TODAY, "When should I get my flu shot this year? Everything to know about flu season during the coronavirus pandemic," 21 Aug. 2020 Each shot protects from either three strains (trivalent) or four strains (quadrivalent) of influenza. Ian Richardson, USA TODAY, "Fact check: Getting flu shot doesn't make you more (or less) likely to get the coronavirus," 1 Apr. 2020 The quadrivalent FluBlok vaccine developed by Sanofi Pasteur in Lyon, France, is manufactured in this way. Eric Bender, Scientific American, "Accelerating flu protection," 18 Sep. 2019 The company is preparing applications for regulatory approval in the United States and Canada, and is building a factory that would use its process to produce 30 million doses of quadrivalent vaccine each year. Eric Bender, Scientific American, "Accelerating flu protection," 18 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quadrivalent.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of quadrivalent

Adjective

1865, in the meaning defined at sense 1

Noun

1923, in the meaning defined above

History and Etymology for quadrivalent

Adjective

International Scientific Vocabulary

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Time Traveler for quadrivalent

Time Traveler

The first known use of quadrivalent was in 1865

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Cite this Entry

“Quadrivalent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quadrivalent. Accessed 10 May. 2021.

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More Definitions for quadrivalent

quadrivalent

adjective
quad·​ri·​va·​lent | \ ˌkwäd-rə-ˈvā-lənt, in sense 2 kwä-ˈdriv-ə-lənt \

Medical Definition of quadrivalent

 (Entry 1 of 2)

2 : composed of four homologous chromosomes synapsed in meiotic prophase

quadrivalent

noun

Medical Definition of quadrivalent (Entry 2 of 2)

: a quadrivalent chromosomal group

Comments on quadrivalent

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