NEW YORK (AP) — The nation’s top public health agency was left reeling and leaderless as the White House works to expel its handpicked director from the Centers for Disease Control and Prevention and three senior officials were escorted from its headquarters on Thursday.

The turmoil triggered rare bipartisan alarm as President Donald Trump’s health secretary, Robert F. Kennedy Jr. , tries to advance anti-vaccine policies that are contradicted by decades of scientific research.

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