Health and Human Services Secretary Robert F. Kennedy Jr. speaks during a meeting to sign an executive order about vaccines, Monday, Aug. 10, 2026, in the Oval Office of the White House in Washington.
As featured on
President Donald Trump has signed an executive order calling for spacing out childhood vaccines into separate medical visits and splitting the combined measles, mumps and rubella vaccine into three different shots. Trump has long suspected that the number or timing of vaccines could play a role in autism spectrum disorder, even as scientific consensus and decades of studies have firmly concluded there is no link. Childhood vaccines, and how and when to give them, go through rigorous studies and safety tracking continues for years as the shots are used.
