This morning, after contentious discussion, the Advisory Committee on Immunization Practices (ACIP) voted 8-3 to drop the recommendation for a universal birth hepatitis B vaccine dose and 6-4 to suggest that parents use serologic testing—which detects antibodies in the blood—to determine whether more than one dose of the three-dose series are needed.
Under the first recommendation, only infants born to mothers who test positive for hepatitis B would receive a birth dose, while parents of other babies would be advised to postpone the first dose for at least two months.
ACIP makes vaccination recommendations to the Centers for Disease Control and Prevention (CDC), including those for different age-groups and disease risk status, as well as on US immunization schedules for children, adolescents, and adults. The CDC director has ultimate discretion whether to approve ACIP’s advice, and physicians can make their own decisions about whether to comply, but ACIP recommendations have historically affected insurance coverage of vaccines.
Lack of evidence supporting decisions
The historic decisions came a day after the committee, installed by US Health and Human Services (HHS) Secretary Robert F. Kennedy Jr., decided to postpone the vote following a contentious discussion filled with anti-vaccine rhetoric and racial innuendo. Kennedy has claimed, without evidence, that the hepatitis B vaccine causes autism.
Today’s votes occurred despite some members urging another delay, heated exchanges during which members cited abundant evidence supporting the efficacy and safety of the current recommendations, a lack of evidence to support the changes, and an ad hoc two-minute rule for speaking that cut off some members before they could finish their statements.
The first part of the discussion, led by Robert Malone, MD, a vaccinologist at Louisiana State University, centered on the risks and benefits of the universal hepatitis B vaccine birth dose, which the CDC has recommended, regardless of the mother’s risk factors, since 1991.
The second, very brief, discussion segment focused on whether children need more than one hepatitis B vaccine dose and the proposed use of serologic testing to investigate whether vaccinees are protected against hepatitis B. A proposal touted a threshold of at least 10 milli-international units per milliliter (mlIU/mL) of antibody, which proponents said correlates to adequate protection against infection, despite a lack of evidence that it does.
No new data, safety signals
ACIP member Joseph Hibbeln, MD, a psychiatrist, neuroscientist, and former chief of the Section on Nutritional Neurosciences at the National Institutes of Health (NIH), questioned the basis of the recommendation that infants of uninfected mothers not receive their initial hepatitis B vaccine dose until at least two months of age.
“This specific point is the reason why we tabled this issue for three months to more fully discuss it; however, we have still not had any information or science presented or discussed with regards to this issue of before or after two months of age,” he said. He also urged his fellow members to rely on data rather than speculation.
At ACIP’s September meeting, members voted to postpone a vote on the birth hepatitis B dose because most felt that more data was needed to inform the wording of the recommendation.