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.
However, because California does not require hepatitis A vaccination for school or child care entry, many remain unvaccinated. Jasmine Laws, MSNBC Newsweek, 6 May 2025 In outbreak settings, such as in Los Angeles County, unvaccinated people at higher risk for contracting the virus or for developing severe disease are recommended to receive the vaccine. Katia Hetter, CNN Money, 15 May 2025 The outbreak, which began in West Texas, has killed two unvaccinated children and one adult, and has now sickened more than 1,000 people in 30 states, according to the C.D.C. Mr. Kennedy has acknowledged that vaccines are an effective way of preventing the spread of measles. Sheryl Gay Stolberg, New York Times, 14 May 2025 The virus is spreading quickest through communities with large numbers of unvaccinated or undervaccinated people. Alix Martichoux, The Hill, 7 May 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 4 Jun. 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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