Vaccine skepticism among Americans is widespread, The POLITICO Poll found, indicating that one of Health Secretary Robert F. Kennedy Jr.’s animating priorities is gaining traction.

Results from the March poll of 3,851 U.S. adults conducted by Public First show that a plurality of Americans question the safety of vaccines, support reducing the number administered and believe that people’s right to decide what they put in their bodies is more important than preventing the spread of disease.