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.

Newly released files about the assassination of Robert F. Kennedy shed new light on his life and how he briefed secret service agents about a foreign trip behind the Iron Curtain. On Thursday, the CIA released 54 previously classified documents totaling 1,

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.

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

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

Vaccination experts recently fired by Donald Trump’s administration sounded the alarm in a Monday editorial, saying they were “deeply concerned” by the actions of a US health secretary known for his vaccine scepticism.