During Thursday’s meeting, the CDC advisers stumbled over repetitive language and lack of clarity about what they were voting on. Elijah Nouvelage/Getty Images

In a meeting punctuated by conflict and confusion, the independent vaccine advisers to the US Centers for Disease Control and Prevention on Thursday again delayed a vote that could dramatically change hepatitis B vaccination practice in the United States.

The members of the Advisory Committee on Immunization Practices, or ACIP, had been scheduled to weigh in on whether to change recommendations regarding hepatitis B vaccination for newborns in the US. The vote, now set to take place at Friday’s session, had already been pushed back at the advisers’ September meeting. But during Thursday’s meeting, advisers stumbled over repetiti

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