booster shot
noun
: a supplementary dose of an immunizing agent administered as an injection
called also booster, booster dose
Examples of booster shot in a Sentence
He had to get two booster shots at his latest checkup.
Recent Examples on the Web
Most people who have received two doses of the MMR vaccine do not need a measles booster shot, but some specific individuals may benefit, such as those who have undergone certain treatments for cancer and have lost some immunity, according to Dr. Fuller.
—
Rob Williams, EverydayHealth.com, 19 Feb. 2025
Two doses of the MMR vaccine during childhood is the best defense against measles, and experts said most people who are fully vaccinated do not need a booster shot.
—Jenna Anderson, Health, 14 Feb. 2025
The tetanus booster shot is recommended every 10 years.
—Karen Garcia, Los Angeles Times, 17 Jan. 2025
Phase 3 clinical trials suggest that three doses of the R21 vaccine work about as well as four doses, the last of which would be administered as a booster shot a year after the first three.
—Celia Ford, Vox, 7 Dec. 2018
See All Example Sentences for booster shot
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Rob Williams, EverydayHealth.com, 19 Feb. 2025
Two doses of the MMR vaccine during childhood is the best defense against measles, and experts said most people who are fully vaccinated do not need a booster shot.
—Jenna Anderson, Health, 14 Feb. 2025
The tetanus booster shot is recommended every 10 years.
—Karen Garcia, Los Angeles Times, 17 Jan. 2025
Phase 3 clinical trials suggest that three doses of the R21 vaccine work about as well as four doses, the last of which would be administered as a booster shot a year after the first three.
—Celia Ford, Vox, 7 Dec. 2018
See All Example Sentences for booster shot
Cite this Entry
“Booster shot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/booster%20shot. Accessed 3 Mar. 2025.
Copy CitationMedical Definition
booster shot
noun
: a supplementary dose of an immunizing agent administered as an injection
… the state is requiring older children to have additional booster shots for measles, mumps and rubella.—Ann Schrader, The Denver Post
see booster, booster dose
Ann Schrader, The Denver PostLove words? Need even more definitions?
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