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
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
Essential Reads How policy will be impacting the health care sector this week and beyond:
Less than 1 in 6 health care workers get COVID-19 booster shot: CDC
Fewer health care workers are getting the most recent COVID-19 booster.
—Nathaniel Weixel, The Hill, 5 Nov. 2024
Researchers suggest that getting a booster shot during the optimal period could offer a 3-to-4-fold increase in protection compared to other times of the year.
—Fran Kritz, Verywell Health, 9 Dec. 2024
Parents, family members and caregivers who will be in close contact with babies younger than 1 year old should get a booster shot.
—Dr. Shreya Doshi, Boston Herald, 8 Dec. 2024
See all Example Sentences for booster shot 
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Celia Ford, Vox, 7 Dec. 2018
Essential Reads How policy will be impacting the health care sector this week and beyond:
Less than 1 in 6 health care workers get COVID-19 booster shot: CDC
Fewer health care workers are getting the most recent COVID-19 booster.
—Nathaniel Weixel, The Hill, 5 Nov. 2024
Researchers suggest that getting a booster shot during the optimal period could offer a 3-to-4-fold increase in protection compared to other times of the year.
—Fran Kritz, Verywell Health, 9 Dec. 2024
Parents, family members and caregivers who will be in close contact with babies younger than 1 year old should get a booster shot.
—Dr. Shreya Doshi, Boston Herald, 8 Dec. 2024
See all Example Sentences for booster shot
Dictionary Entries Near booster shot
Cite this Entry
“Booster shot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/booster%20shot. Accessed 10 Feb. 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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