unvaccinated

adjective

un·​vac·​ci·​nat·​ed ˌən-ˈvak-sə-ˌnā-təd How to pronounce unvaccinated (audio)
: not having received a vaccine : not vaccinated
children unvaccinated for measles

Examples of unvaccinated in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This would mean two unvaccinated kids. Michal Ruprecht, NPR, 8 Sep. 2025 If exposed to an infected person, 90% of unvaccinated people will become infected. Judy Stone, Forbes.com, 6 Sep. 2025 In late March, Covenant Children’s Hospital, in nearby Lubbock, reported treating a small number of unvaccinated children with measles who were also suffering from vitamin-A toxicity. Tom Bartlett, The Atlantic, 3 Sep. 2025 Results may differ in unvaccinated or high-risk groups. New Atlas, 2 Sep. 2025 See All Example Sentences for unvaccinated

Word History

First Known Use

1871, in the meaning defined above

Time Traveler
The first known use of unvaccinated was in 1871

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Cite this Entry

“Unvaccinated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unvaccinated. Accessed 10 Sep. 2025.

Medical Definition

unvaccinated

adjective
un·​vac·​ci·​nat·​ed -ˈvak-sə-ˌnāt-əd How to pronounce unvaccinated (audio)
: not vaccinated
unvaccinated children
Last Updated: - Updated example sentences
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