The US Food and Drug Administration’s longtime oncology chief has filed to retire from the agency just weeks after he was chosen to lead the FDA’s drug division, according to four people familiar with his decision.

A dozen prior leaders of the U.S. Food and Drug Administration — appointed by Republicans and Democrats alike — issued a scathing denunciation of new FDA assertions casting doubt on vaccine safety.

A dozen prior leaders of the U.S. Food and Drug Administration — appointed by Republicans and Democrats alike — issued a scathing denunciation of new FDA assertions casting doubt on vaccine safety.