Fact Checks/Health & medicine/ReviewThe claim“One mutation, and the vaccine becomes ineffective.”RatingFalseReviewed by FactCheck.org ↗ · August 7, 2025Original fact check ↗Sources and attribution[S1] FactCheck.org original reviewOriginal review · Retrieved October 16, 2026Search related fact checks →Use this record in your application ↗Report a correction ↗