The latest departures from the CDC mean close to a third of the agency's top management is leaving or left recently.

The departures were announced at a meeting of agency senior leaders. The Atlanta-based CDC has two dozen centers and offices.

Kennedy Jr., the U.S. health secretary who for years has been one of the nation’s leading anti-vaccine activists.The CDC is based in Atlanta and has a $9.2 billion core budget. It was created ...