Robert F. Kennedy Jr.’s frequent questioning of the safety of childhood vaccinations over the years is persisting as an issue in his confirmation hearings to become the Trump administration's top health official.

Kyra Kennedy, 29, is the youngest daughter of health secretary nominee Robert F. Kennedy Jr.

As he seeks to lead the health department, Mr. Kennedy wore a thin tie dotted with feathered creatures to cap a classic suit.

Robert F. Kennedy Jr. faced questions from senators during his confirmation, seeing support from his wife, a Florida native. Who is Cheryl Hines?

Democrats focused on Kennedy's anti-vaccine advocacy. Republicans probed the former Democratic leader on his abortion and agriculture views.

Robert F. Kennedy Jr. said his interest in health has roots in his decades-long career as an environmental advocate and attorney. “I learned very early on that human health and environmental injuries

Huge lines of both supporters and opponents of Kennedy are in the hallways to watch the hearing, engaging in vigorous debate over vaccine studies while they wait to nab a seat. Daniel Sinnett, who works in the biopharmaceutical industry,

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Alexandra Sifferlin, a health and science editor for Times Opinion, hosted an online conversation on Wednesday with the Opinion columnist Zeynep Tufekci and the Opinion writers David Wallace-Wells and Jessica Grose about Robert F. Kennedy Jr.’s first of two confirmation hearings for secretary of health and human services.

Robert F. Kennedy Jr. has said vaccines are not safe. His support for abortion access has made conservatives uncomfortable.

The former U.S. ambasador — the last surviving child of Jacqueline and John F. Kennedy — urged lawmakers to reject RFK Jr.’s nomination as health secretary.