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![USATODAY Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::15754281.png) USA TODAY [@USATODAY](/creator/twitter/USATODAY) on x 5.1M followers
Created: 2025-07-23 15:18:21 UTC

Although it has been largely phased out of U.S. vaccines, thimerosal has long been targeted by anti-vaccine advocates despite broad scientific consensus on its safety.

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