Kennedy Jr. was confirmed to the nation's top health position Thursday, Louisiana Surgeon General Ralph Abraham sent a memo to the state's health department saying that the state "will no longer promote mass vaccination" and barred staff from running seasonal vaccine campaigns,

One expert who studies emerging infectious diseases called Kennedy's past tweets and remarks about the HPV vaccine "complete fabrication." Here's why.

Del Bigtree, now a leader of Robert F. Kennedy Jr.’s grassroots movement, said he should seek proof of an autism link.