anti-vaccine

adjective

anti-vac·​cine ˌan-tē-vak-ˈsēn How to pronounce anti-vaccine (audio) ˌan-ˌtī- How to pronounce anti-vaccine (audio)
-ˈvak-ˌsēn
variants or less commonly antivaccine
: opposed to the use of vaccines
A handful of parents and anti-vaccine activists told lawmakers … that they believe vaccines are responsible for countless cases of autism, learning disabilities and death.Jim Hughes
… the rising global threat of antivaccine sentiments and vaccine misinformation contributed to the WHO [=World Health Organization] classifying vaccine hesitancy as a top ten global health threat in 2019 …David M. Higgins and Sean T. O'Leary

Examples of anti-vaccine 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.
But its path in the US could be rocky, not least because of Kennedy himself, who’s embraced both anti-vaccine views and conspiracy theories, including that Lyme disease may be a bioweapon engineered by US government scientists during the Cold War. Meg Tirrell, CNN Money, 31 Mar. 2026 The first nominee was Dave Weldon, a doctor and a former representative from Florida who shares some of Kennedy’s anti-vaccine views. Tom Bartlett, The Atlantic, 25 Mar. 2026 Unfortunately, the garbage that RFK spewed during his time as a private sector anti-vaccine crusader and is now trying to make government policy has had vaccine skepticism growing nationwide, with deadly consequences. Arkansas Online, 23 Mar. 2026 Some of the members, like Kennedy, have a history of anti-vaccine advocacy and involvement in anti-vaccine groups. Mary Walrath-Holdridge, USA Today, 22 Mar. 2026 Unfortunately, the garbage that RFK spewed during his time as a private sector anti-vaccine crusader and is now trying to make government policy as the nation’s top public health official has had vaccine skepticism growing nationwide, with deadly consequences. New York Daily News Editorial Board, New York Daily News, 18 Mar. 2026 Kennedy was a leading anti-vaccine activist before becoming the nation’s top health official. Lisa Schencker, Chicago Tribune, 17 Mar. 2026 The decision comes as the White House has worked to move away from vaccine policy reforms, a signature issue for Kennedy, who previously created and led the anti-vaccine group Children’s Health Defense. Anil Oza, STAT, 16 Mar. 2026 The decision is a setback for Kennedy, a longtime anti-vaccine activist who promised to restore trust in the public health agencies, but whose controversial policies have created confusion among pediatricians and contributed to more distrust of childhood vaccination, experts say. Erika Edwards, NBC news, 16 Mar. 2026

Word History

First Known Use

1880, in the meaning defined above

Time Traveler
The first known use of anti-vaccine was in 1880

Browse Nearby Words

Cite this Entry

“Anti-vaccine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/anti-vaccine. Accessed 3 Apr. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster