By MATTHEW PERRONE and ALI SWENSON, Associated Press

WASHINGTON (AP) — A contentious three-hour hearing between U.S. senators and Robert Kennedy Jr. devolved into multiple screaming matches on Thursday as the nation’s health secretary fended off accusations about sweeping changes he’s made to vaccines, health care policy and leadership.

The oversight hearing in the Senate Finance Committee was a chance for senators to seek answers from Kennedy on recent high-profile departures at the Centers for Disease Control and Prevention, the appointment of vaccine critics to an influential federal advisory committee and changes to COVID-19 vaccine recommendations that will make it harder for many Americans to get the shots .

Both Democrats and Republicans came out swinging. They questioned

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