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booster shot

NOUN

additional dose of vaccine

Synonyms

WEAK

booster booster dose booster injection immunization recall dose vaccine

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Accessing the Covid booster shot might seem a bit more confusing this year.

From The Wall Street Journal • Oct. 7, 2025

The vaccine series is part of school-entry immunization requirements in all 50 states, and a booster shot is recommended for pregnant women.

From Los Angeles Times • May 2, 2025

The agency also recommends an additional per-decade booster shot of the anti-pertussis Tdap vaccine, which is says around 39% of adults have received in the last 10 years.

From Salon • Sep. 21, 2024

For those more likely to become seriously ill from Covid, the NHS offers a free booster shot.

From BBC • Sep. 16, 2024

We both want a booster shot for Blue Martian.

From Category Phoenix by Ellanby, Boyd