All 17 experts from the Advisory Committee for Immunization Practices who were replaced last month by Robert F. Kennedy Jr. called the health secretary's new picks "inexperienced and biased."

Burns' position was noted in an April memo from CDC chief of staff Matt Buzzelli that was obtained by MedPage Today editor-in-chief Jeremy Faust, MD. MSNBC reported that Burns supported the anti-vaccine movement as a member of Republican congressional staffs in the 1990s.

The nearly 40-year-old law that created the Vaccine Injury Compensation Program has received a lot of attention this month.