CDC Databases Paused, Raising Concerns

Almost half of the databases that the Centers for Disease Control and Prevention (CDC) regularly updated have been halted without any clear explanation, according to recent research. These data systems had been crucial for tracking public health issues like Covid vaccination rates and hospitalizations for respiratory syncytial virus.

The research, published on Monday in the journal Annals of Internal Medicine, reveals that at the beginning of 2025, the CDC was managing 82 databases with at least monthly updates. However, by the end of October, 38 of these databases had become inactive, with 34 showing no new entries over the prior six months.

Researchers noted that these unexplained pauses began primarily in March and April 2025, shortly after the change in presidential administration and Robert F. Kennedy Jr. took over as Secretary of Health and Human Services.

While the CDC is widely recognized for its public health advisories, it also serves as a national record-keeper. This includes monitoring the spread of infections and the uptake of vaccines in real time. The recent findings suggest, however, that the agency may be distancing itself from this vital component of its mission. Alarmingly, nearly 90% of the paused databases relate specifically to vaccinations.

Dr. Jeremy Jacobs, an assistant professor at Vanderbilt University and one of the study’s authors, highlighted databases that tracked weekly Covid vaccinations among pregnant women and adult populations, which had not been updated since late April.

Furthermore, other outdated databases included information on respiratory illnesses treated in emergency rooms and the use of a drug that protects infants from RSV. “It’s interesting that these changes are mostly, if not entirely, in the vaccination sector,” said Noel Brewer, another co-author and public health professor at the University of North Carolina at Chapel Hill.

Brewer added, “At first glance, this seems quite deliberate, but we’re left wondering why these databases have gone quiet.”

Andrew Nixon, a spokesperson for the Health and Human Services Department, mentioned that the CDC continues to report Covid and RSV activity through its surveillance systems and provides weekly flu activity updates through a database known as FluView. He stated that modifications to specific dashboards reflect routine data management decisions, not any political influence, insisting, “Public health data reporting is driven by scientific integrity, transparency, and accuracy.”

Without these updated databases, several public health experts expressed concern about the difficulties in assessing vaccination coverage at both national and regional levels, which could complicate responses to new outbreaks. Dr. Lisa Lee, who formerly spent 14 years at the CDC, emphasized that local health officials often depend on CDC databases to manage public health crises.

“If, for instance, we encounter wild-type polio because of lower vaccination rates, that’s the kind of information the surveillance system would provide,” she explained.

In a related editorial published in the same journal, Dr. Jeanne Marrazzo, CEO of the Infectious Diseases Society of America, criticized the lack of updates, whether intentional or not, as reflecting “a profound disregard for human life.” She stated, “The evidence speaks for itself: The administration’s stance against vaccines has disrupted the crucial data flow needed to keep Americans safe from preventable infections.” Marrazzo was previously director of the National Institute of Allergy and Infectious Diseases, until her termination by Kennedy, a move she claims was partly due to her strong advocacy for vaccines.

The study’s authors, who comprise a diverse team of public health experts and a law professor, suggest that the CDC may have halted database updates due to workforce cuts, budget constraints, or changing attitudes towards vaccines among federal health officials. This aligns with a broader trend of questionable changes to the CDC’s website, which sometimes disseminate information that contradicts established scientific consensus.

Dr. Lee voiced concern about misinformation surrounding vaccines being circulated by non-health professionals in official channels. In November, a webpage that previously stated that vaccines do not cause autism was altered to suggest “studies have not ruled out the possibility,” contradicting decades of scientific consensus. Additionally, the CDC has removed content related to gender identity and issues like HIV and contraception.

These website modifications are part of a broader restructuring within the public health agencies under Kennedy’s direction. Since his appointment, the U.S. has ceased recommending routine Covid vaccinations for healthy children, reduced funding for mRNA vaccine research, and revamped the childhood vaccination schedule to limit universal recommendations. Kennedy also replaced the CDC’s previous vaccine advisory committee with a new group that has expressed skepticism about vaccines. Last December, the new panel even reversed a long-standing recommendation to vaccinate all newborns against hepatitis B.

“It’s troubling to advise caution with these recommendations,” Marrazzo confessed. “As a parent, I would rely on a board-certified pediatrician, ideally one who’s aligned with the American Academy of Pediatrics.”

The Academy recently issued new guidance on childhood vaccinations, which echoes the recommendations the CDC had made prior to Kennedy’s sweeping changes.