The new members of US Health Secretary Robert F Kennedy Jr's panel of vaccine advisers will review long-approved immunisation schedules for children and teens.
The seven members of the Advisory Committee on Immunization Practices (Acip) met for the first time on Wednesday, weeks after Kennedy ousted all 17 of their predecessors.
The Acip recommends who should be vaccinated and when to the US Centers for Disease Control and Prevention (CDC).
Ahead of the meeting, public health experts and politicians raised concerns about the qualifications of the new members - several of whom are vaccine critics.
The health secretary sparked uproar when he removed all 17 members of the ACIP on 9 June, and then hand-picked eight new members to serve on the panel - including one who dropped out hours before the first meeting.
