un·vac·ci·nat·ed | \ ˌən-ˈvak-sə-ˌnā-təd \

Definition of unvaccinated 

: not having received a vaccine : not vaccinated children unvaccinated for measles

Examples of unvaccinated in a Sentence

Recent Examples on the Web

In the Berkeley Rose School, a private Waldorf school, all of the unvaccinated students (87 percent of the kindergartners) had personal belief exemptions. New York Times, "After a Debacle, How California Became a Role Model on Measles," 16 Jan. 2018 Mignot, too, believes there was a true rise in narcolepsy cases during the pandemic, both among vaccinated and unvaccinated people. Helen Branswell, STAT, "A stubborn medical mystery: Was pandemic flu vaccine tied to an increase in narcolepsy cases?," 5 July 2018 At least 80-85% must be fully immunised to ensure that polio cannot spread among unvaccinated individuals if it is ever reintroduced. The Economist, "Polio has been reported in Papua New Guinea," 28 June 2018 Then the Missouri outbreak started and spread in and around Liberty, mostly among a few unvaccinated families. Andy Marso, kansascity, "Kansas City's two measles outbreaks are over. But what did they cost taxpayers?," 11 June 2018 But since then there have been instances of record-breaking outbreaks, mostly among unvaccinated individuals and groups that shun vaccination. Naseem S. Miller, OrlandoSentinel.com, "4 measles cases reported in Florida this month," 29 May 2018 As long as carriers keep circulating the virus, children who go unvaccinated or miss a dose are at risk of contracting polio. Meher Ahmad, New York Times, "Pakistan Has Just One New Polio Case, but Isn’t Declaring Victory Yet," 20 May 2018 But if people are not vaccinated, then the virus or pathogen has easy targets to start an infection, which can spread quickly among people who are unvaccinated. Alice Park, Time, "Kids With Autism Are Less Likely to Be Vaccinated," 26 Mar. 2018 None of those vaccinated developed the disease after 10 days, even as 16 people in the unvaccinated comparator group did, according to a report in the Lancet. Clifton Leaf, Fortune, "As an Ebola Outbreak Threatens to Spread Even Wider, A New Vaccine Gives Hope.," 19 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unvaccinated.' 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 unvaccinated

1871, in the meaning defined above

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22 Aug 2018

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The first known use of unvaccinated was in 1871

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un·vac·ci·nat·ed | \ -ˈvak-sə-ˌnāt-əd \

Medical Definition of unvaccinated 

: not vaccinated unvaccinated children

Comments on unvaccinated

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to deposit or conceal in a hiding place

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