The Centers for Disease Control and Prevention dramatically overhauled childhood vaccine guidelines on January 5, slashing routine immunization recommendations from 17 to 11 diseases in the most sweeping change to the nation’s vaccine schedule in decades.

Acting CDC Director Jim O’Neill signed a decision memorandum following a presidential directive from President Trump to review international best practices from peer nations . The changes came at a time when flu cases and hospitalizations are surging, with the CDC simultaneously dropping its advice that all children get annual flu shots .

The new schedule reduces universal vaccine recommendations while moving flu, hepatitis A & B, respiratory syncytial virus (RSV), rotavirus, and meningitis vaccines to “high-risk” or “shared clinical decision-making” categories . Officials said the changes were intended to increase public confidence in vaccines, emphasizing that no vaccines were removed entirely and all remain free and available .

Doctor visits for flu-like illnesses have reached their highest level in nearly 30 years, and flu killed at least 288 children last year according to the CDC . Most children who died from flu last season were unvaccinated . At least nine children have already died from flu this season .

“In the midst of that, changing the recommendation to make it seem as if the recommendation for flu vaccine is really uncertain is dangerous,” said pediatrician Dr. Melanie Higgins.

The changes came from top political officials without following the usual process involving public consideration of scientific evidence and outside expert input . The Advisory Committee on Immunization Practices was not consulted, officials confirmed .

“This doesn’t appear to be a very transparent process,” said Dr. Robert Califf, former FDA commissioner under Presidents Obama and Biden. “I would have hoped there would be public discussion of the body of work that led to this conclusion, including the important opinions of people within CDC, NIH and FDA who have spent a career becoming experts in the field” .

The curtailment drew sharp criticism from leading pediatric organizations . “This wildly irresponsible decision will sow further doubt and confusion among parents and put children’s lives at risk,” said epidemiologist Michael Osterholm of the University of Minnesota’s Center for Infectious Disease Research and Policy .

“I think that a reduced schedule is going to endanger children and lay the groundwork for a resurgence in preventable disease,” said Dr. Caitlin Rivers, director of the Center for Outbreak Response Innovation at Johns Hopkins Bloomberg School of Public Health .

“President Trump directed us to examine how other developed nations protect their children and to take action if they are doing better,” said Health Secretary Robert F. Kennedy Jr. “After an exhaustive review of the evidence, we are aligning the U.S. childhood vaccine schedule with international consensus” .

Officials noted that the U.S. recommended more childhood vaccines than any peer nation in 2024, with Denmark immunizing against 10 diseases compared to 18 in the United States .

However, Danish vaccine expert Anders Hviid warned against using Denmark as a model. “In Denmark, everyone has access to excellent prenatal and childhood care. As I understand it, that is not the case for everyone in the US. Vaccines prevent infections that may have poor outcomes for children who do not have access to good healthcare” .

The assessment driving the changes was authored by Martin Kulldorff, chief science officer at HHS, and Tracy Beth Høeg, acting director of the FDA’s Center for Drug Evaluation and Research .

The new guidelines require “shared clinical decision-making” conversations between families and healthcare providers for several vaccines. “The possibility of doing mass vaccination again in that way — I don’t see how that could be possible because the demands of shared decision-making require individual conversations with each family about each child,” said Dr. Molly O’Shea of Birmingham Pediatrics .

All vaccines remain covered by federal programs including Medicaid and the Children’s Health Insurance Program, with parents not required to pay out of pocket . However, long-term impacts on private insurance coverage remain unclear .

The American Academy of Pediatrics released its own schedule on January 26 maintaining routine vaccination recommendations for vaccines removed by the CDC . “For more than 60 years, millions of children and countless American communities have experienced the benefits of routine childhood vaccinations,” said AAP President Dr. Andrew Racine .

The controversy highlights broader tensions over vaccine policy under Kennedy’s leadership of HHS, with pediatricians warning that reduced vaccination rates could fuel outbreaks of preventable diseases during an already challenging flu season.