By Swikblog Health Desk | December 5, 2025
In a seismic shift to U.S. vaccine policy, a federal advisory panel to the Centers for Disease Control and Prevention has voted to end the automatic recommendation that all newborns receive a hepatitis B shot at birth. Instead, only babies born to mothers infected with the virus, or whose status is unknown, will still be strongly advised to get the vaccine within the first hours of life.
The decision, pushed through on Friday after contentious debates and multiple failed votes, is being celebrated by Health Secretary Robert F. Kennedy Jr. as a triumph in his long-running campaign to “upend” the childhood vaccine schedule. But many paediatricians and public health leaders say the vote risks undoing decades of progress against a virus that can silently scar a child’s liver for life.
What the new hepatitis B guidance actually says
For more than 30 years, the guidance was simple: in the United States, every newborn received a hepatitis B shot within 24 hours of birth, with two further doses later in infancy. That universal “birth-dose” policy, introduced in 1991, dramatically reduced infections in children.
Under the new recommendation from the Advisory Committee on Immunization Practices (ACIP), the picture is far more complicated. If a pregnant woman tests negative for hepatitis B, parents are now told to “consult with their health care provider and decide when or if their child will be vaccinated” — and the shot should be given no earlier than two months of age.
The committee did not change advice for babies born to mothers who are infected or whose status is unknown: those newborns are still expected to receive a birth-dose and, in many cases, additional medication to block infection. Officials say insurance coverage should remain in place, but the shift sends a powerful signal that the birth-dose is no longer considered a default standard of care.
A reshaped committee and a chaotic process
Friday’s vote was the culmination of months of turmoil. Earlier this year, Mr. Kennedy fired all 17 previous ACIP members and replaced them with appointees who largely share his scepticism about vaccines. Many have limited experience in vaccine research or clinical paediatrics.
Over two days of meetings at CDC headquarters in Atlanta, the new panel repeatedly struggled to reach a decision. The hepatitis B motion failed three times before finally passing. One member said the wording had been rewritten four times in just 96 hours, calling the rushed process “unconscionable”.
Outside the building, protesters gathered with signs, accusing federal agencies of hiding vaccine harms. Inside, several presenters were long-time figures in the anti-vaccine movement: climate researcher Cynthia Nevison and activist Mark Blaxill presented slides highlighting alleged safety problems and questioned the need for the birth-dose at all.
Nevison and Blaxill previously co-authored a widely criticised paper on the financial burden of autism that was later retracted by a scientific journal for misrepresenting autism incidence and failing to disclose conflicts of interest. Another activist, Toby Rogers, told the panel that two widely used hepatitis B vaccines “never should have been licensed” — without disclosing his close ties to Children’s Health Defense, the organisation Mr. Kennedy founded.
Later on Friday, the panel was scheduled to hear from Aaron Siri, a lawyer who has long joined Mr. Kennedy in legal battles against vaccine mandates, this time offering his views on the entire childhood immunisation schedule.
‘We know it’s safe, and we know it’s very effective’
For doctors who have spent their careers trying to eliminate hepatitis B in children, the vote was a breaking point. The virus is far more dangerous in infancy than adulthood: infection in the first year of life leads to chronic hepatitis B in most cases, greatly increasing the risk of cirrhosis and liver cancer decades later.
“We know it’s safe, and we know it’s very effective,” said Dr. Cody Meissner, a paediatrics professor at Dartmouth’s Geisel School of Medicine. He warned that scrapping the universal birth-dose means “we will see more children and adolescents and adults infected with hepatitis B.”
Supporters of the new guidance argue that hepatitis B is primarily a sexually transmitted infection and that babies face minimal risk if their mothers test negative. One panellist, Retsef Levi of the Massachusetts Institute of Technology, claimed the infection risk in early childhood for those babies is “probably one in several millions.”
But that argument ignores how the virus actually spreads. Before universal vaccination, only about half of childhood cases came directly from an infected mother. The rest were believed to arise from household exposure — shared razors, toothbrushes and small blood spills in homes where relatives, often unaware of their own infection, carried hepatitis B. As many as 70 percent of the roughly two million Americans with hepatitis B are thought to be undiagnosed.
Antibody testing and ‘Never Never Land’ medicine
In a second close vote, the committee also recommended that parents seek out antibody testing after vaccination to check whether the shot worked — a step the panel has not typically advised for healthy infants.
Several members objected. One panellist said the new language had no supporting data on why two months had been chosen as the earliest age, or why routine antibody testing would be necessary or feasible. Dr. Meissner described the move as “kind of making things up,” adding that the committee was drifting into “Never Never Land.”
Trust in the CDC takes another hit
Outside experts say the damage goes far beyond one vaccine. “Today is a defining moment for our country,” said infectious-disease specialist Michael Osterholm. “We can no longer trust federal health authorities when it comes to vaccines.”
Two of America’s most prominent vaccine scientists, Dr. Paul Offit of the University of Pennsylvania and Dr. Peter Hotez of Baylor College of Medicine, refused invitations to participate in the meeting. Offit accused the panel of giving parents misleading information and called it “a political group, not a scientific group.” Hotez said ACIP appeared to have “shifted its mission away from science and evidence-based medicine.”
Public sentiment may already be shifting. A recent survey by the Annenberg Public Policy Center found that if the CDC and the American Medical Association issued conflicting vaccine guidance, more than twice as many Americans would trust the medical association over the federal agency.
What parents can do now
The new hepatitis B guidance is a recommendation, not a ban. Parents can still request the birth-dose in hospital, and many paediatricians are expected to continue offering it as the safest option. For families wanting to review the evidence, resources such as the CDC’s overview of hepatitis B vaccination in children and the World Health Organization’s hepatitis B fact sheet remain key reference points.
The wider worry is what comes next. Kennedy-aligned appointees have signalled that other childhood vaccines will soon be reviewed, from measles to HPV. If the hepatitis B debate is a preview, the United States may be entering an era in which long-settled scientific consensus can be overturned by panels dominated by activists rather than experts — with real-world consequences for families who thought they were leaving the hospital with their baby already protected.
For readers interested in how seemingly technical decisions can reshape entire seasons and systems, on and off the field, Swikblog has explored similar ripple effects in sport and society in pieces like this deep dive into the North London derby’s wider stakes . The story unfolding around hepatitis B is another reminder: small changes in the rules can change everything.
