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Synonyms

booster dose

British  

noun

  1. a supplementary injection of a vaccine given to maintain the immunization provided by an earlier dose

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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This was six months after participants received the third yearly booster dose of the vaccine candidate under development, called VLA15.

From The Wall Street Journal • Nov. 26, 2025

Early reports flagged a type of heart swelling called myocarditis as a rare side effect of the mRNA vaccine, particularly for young men ages 18 to 25 after a booster dose.

From Salon • Sep. 5, 2025

Regulators are also considering whether to authorize a booster dose from Novavax, which employs a different but widely used technology for its coronavirus vaccine.

From Seattle Times • Sep. 11, 2023

County also still requires healthcare workers to complete their primary vaccine series and get at least one booster dose, or else receive an exemption from their facilities.

From Los Angeles Times • Apr. 7, 2023

Last autumn frontline health and care workers, adults aged 50 and over and some carers and household contacts were also offered a booster dose.

From BBC • Apr. 1, 2023

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