Robert F. Kennedy's overall approval rating sits at 51 percent, though the party breakdown shows a big divide between Democrats and the GOP.

Fiona Havers, who oversees CDC respiratory virus data, told colleagues she no longer had confidence the data would be used objectively to set vaccine policy.

The new NBC News Decision Desk Poll powered by SurveyMonkey found adults divided over the health secretary but with a bare majority viewing him favorably.

Among the eight people Robert F. Kennedy Jr. announced would make up his new group of outside vaccine advisers to the US Centers for Disease Control and Prevention are an emergency physician who posted Islamophobic commentary on social media and two doctors who were paid to provide expert testimony in trials against a vaccine maker.

Secretary of Health and Human Services Robert F. Kennedy Jr. made several false claims about vaccines in a Thursday appearance on Fox News.

Rob Lucero says he wants to fill a leadership vacuum that he says both the Democratic and Republican parties are experiencing.

The New York Post has issued a stark warning to President Trump about the political risk posed by the “anti-vax agenda” of his health secretary, Robert F. Kennedy Jr.