False information and unclear messaging from government leaders contribute to vaccine hesitancy, making it more likely that outbreaks, hospitalizations, and even deaths will occur. Clear guidance ...

RFK Jr. has claimed measles can be treated with vitamin A and that severe infection is linked to poor diet. But many experts who spoke with ABC News disagreed.

Vaccine hesitancy was rising even before COVID-19 emerged – but the pandemic exacerbated the trend. More kindergartners are ...