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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

And while the FDA did allow seniors and others at high risk to get an extra booster dose this spring, most people will be many months beyond their last shot by fall.

From Seattle Times ● Jun. 15, 2023

Chin-Hong said he suspected the rise in the latest subvariant was a factor in federal officials moving this week to make another booster dose available to older and immunocompromised people.

From Los Angeles Times ● Apr. 20, 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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