This article appears in the January 2026 print edition with the headline “The Most Powerful Man in Science.” ...

Families planning Thanksgiving trips may need to keep an eye not just on the weather, but on where COVID-19 is starting to ...

The resurgence of whooping cough has no single cause. Instead, several problems are occurring at once: falling vaccine ...

ABC News' Medical Correspondent Dr. Darien Sutton reports on the CDC's updated language on vaccines and autism requested by Health and Human Secretary Robert F. Kennedy Jr.