vac·​ci·​na·​tion | \ ˌvak-sə-ˈnā-shən How to pronounce vaccination (audio) \

Definition of vaccination

1 : the act of vaccinating
2 : the scar left by vaccinating

Examples of vaccination in a Sentence

Recent Examples on the Web But in a typical year, less than half of Americans get the vaccination (just 45% last year). Jen Rose Smith, CNN, "This might be your most important flu shot ever," 8 Sep. 2020 Health officials there said students must receive the vaccination by Dec. 31, unless either a medical or religious exemption is claimed. Amanda Blanco,, "Pediatricians urge back-to-school flu shots to prevent students’ symptoms being mistaken for COVID-19," 6 Sep. 2020 The researchers confirmed that the vaccination activated a T cell response in the participants, which may lead to a more robust immunity. John Timmer, Ars Technica, "Team behind the Russian vaccine publishes some details of early trials," 5 Sep. 2020 Employers could lose valuable employees or be unable to recruit talent who choose not to take the vaccination at this time. Phillip Molnar, San Diego Union-Tribune, "Should companies require workers to take a COVID-19 vaccine?," 4 Sep. 2020 Afterward, all of the young people received a flu shot and the groups returned for follow-up blood draws a week, two weeks and six months after the vaccination. Gretchen Reynolds, Star Tribune, "Exercise may boost vaccine response," 3 Sep. 2020 Under this scenario, people whose immune systems have been primed to recognize and fight the virus — whether through infection or vaccination — could contract it again in the future. Helen Branswell, STAT, "Four scenarios on how we might develop immunity to Covid-19," 25 Aug. 2020 They are also required to wear masks during the vaccination and while shopping in the store. Nathan Bomey, USA TODAY, "Walgreens, CVS pharmacists to check for coronavirus symptoms, wear face shields during flu shots," 17 Aug. 2020 Ahmed focused on a type of B cell called bone marrow plasma cells (BMPCs), which continuously produce antibodies after an infection or vaccination. Jon Cohen, Science | AAAS, "Why flu vaccines don’t protect people for long," 13 Aug. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'vaccination.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of vaccination

1891, in the meaning defined at sense 1

History and Etymology for vaccination

earlier, "inoculation with fluid from cowpox pustules," from vaccine "of cowpox" (in the phrases vaccine matter, vaccine virus) + -ation — more at vaccine

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Time Traveler for vaccination

Time Traveler

The first known use of vaccination was in 1891

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Statistics for vaccination

Last Updated

12 Sep 2020

Cite this Entry

“Vaccination.” Dictionary, Merriam-Webster, Accessed 22 Sep. 2020.

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More Definitions for vaccination


vac·​ci·​na·​tion | \ ˌvak-sə-ˈnā-shən How to pronounce vaccination (audio) \

Kids Definition of vaccination

: the act of vaccinating


vac·​ci·​na·​tion | \ ˌvak-sə-ˈnā-shən How to pronounce vaccination (audio) \

Medical Definition of vaccination

1 : the introduction into humans or domestic animals of microorganisms that have previously been treated to make them harmless for the purpose of inducing the development of immunity oral vaccination vaccination against smallpox vaccination for whooping cough
2 : the scar left by vaccinating

More from Merriam-Webster on vaccination

Nglish: Translation of vaccination for Spanish Speakers

Britannica English: Translation of vaccination for Arabic Speakers

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