Bill Nye says he was forced to block HHS Secretary Robert F. Kennedy Jr. after being bombarded with texts pushing debunked claims that vaccines cause autism.

Pediatricians say the parents of their patients are anxious and confused about vaccine safety and access as federal immunization policies shift under Health and Human Services Secretary Robert F. Kennedy Jr.

Health Secretary Robert F. Kennedy says he cannot walk down the street without mothers swarming him to thank him for the work he has done in questioning the quality of the food supply and the efficacy of vaccines.

For decades, one of the world’s most contagious diseases was considered eradicated in the U.S. But today, measles is roaring back with more than 1,267 cases reported this year in the U.S.,