WASHINGTON, DC - AUGUST 10: U.S. President Donald Trump (C) reaches out to shake hands with Health and Human Services Secretary Robert F. Kennedy Jr. before signing an executive order calling for childhood vaccine shots to be spaced out into separate visits during an event in the Oval Office of the White House on August 10, 2026 in Washington, DC. During his second term, Trump has urged Health and Human Services Secretary Robert F. Kennedy Jr. to investigate further research on vaccines. Also pictured is National Institutes of Health Director Jay Bhattacharya (L), and Jayme Leagh Franklin with the The Conservateur (2nd-L). (Photo by Anna Moneymaker/Getty Images)