U.S. Health Secretary Robert F. Kennedy Jr.'s newly reconstituted vaccine advisory panel said during its first meeting on Wednesday that it would study the schedule of childhood and adolescent immunizations and review the use of older vaccines.

The health secretary fired all of the members of the esteemed panel earlier this month, replacing them with his own picks, including vaccine skeptics.

The panel will revisit the hepatitis B shot given at birth, among others. The former head of an anti-vaccine group has been hired as a special employee at H.H.S.