Weekly CDC News Overview – December 14-20, 2025

This is a brief overview of major news about CDC from the past week. In this overview, I describe the major themes from news coverage about CDC, reference important insights and events, and include hyperlinks to all relevant news articles.

Vaccine guidance is shifting, and CDC credibility is decreasing.

Multiple reports this week focused on federal vaccine policy moving away from clear, population-level recommendations and toward a looser framing that places more burden on individual clinicians and families. In parallel, commentators highlighted how changes in CDC language will legitimize misinformation and leave many children without adequate immunization coverage.

• Reuters reported that the U.S. government is considering scaling back childhood vaccine recommendations and looking to Denmark as a model, a shift that would move away from universal CDC guidance toward more individualized decisions between parents and clinicians.
• Reuters reported that HHS is planning a major overhaul of the childhood vaccine schedule to recommend fewer shots, with limited public detail so far on scope, process, or evidentiary basis.
• KFF wrote that Denmark is an outlier among European schedules and that cross-country comparisons often ignore differences in disease threats, health systems, and equity. KFF also emphasized that Denmark’s approach is not simply a “different read” of vaccine science, but a different decision framework and context.
• The American Academy of Pediatrics argued that U.S. vaccine recommendations reflect differences in disease risk and delivery systems across countries, and that delaying or skipping recommended immunizations has no medical justification. Quote: “We don’t follow Denmark’s vaccine recommendations because we don’t live in Denmark.” (Jose Romero, MD, FAAP, AAP)
• Ask Dr. Gounder (Substack) reported on how changes to CDC vaccine-safety language can be weaponized by purveyors of pseudoscience, especially when the agency does not clearly explain what changed and why. Quote: “People were stunned. The change made it look like we’d shifted our position, when in fact the science hasn’t changed at all.” (Unnamed CDC scientist, quoted in Ask Dr. Gounder)
• The Skeptical Scientist (Substack) argued that as policy debate fixates on schedules and side effects, the public conversation increasingly neglects the diseases vaccines prevent, and highlighted tools meant to illustrate what a “pre-vaccine world” looks like in practical terms.
• Your Local Epidemiologist (Substack) wrote about how health institutions can better communicate uncertainty and evidence in real time, a recurring challenge when guidance is evolving and bad-faith actors are quick to fill information gaps.
• Lookout Santa Cruz argued that recent federal vaccine moves reflect political incentives more than scientific reassessment, and warned that downstream effects will be felt by clinicians and local health departments tasked with implementing guidance amid rising distrust.

Hepatitis B policy and research controversy puts “process” at the center of patient safety

Two related developments drew unusual attention: the rollback of universal hepatitis B birth-dose recommendations and the awarding of funding for a research study that would delay vaccination for some newborns in a high-risk low-income country in Africa.

• CIDRAP (Op-Ed) described the December 5 ACIP vote to end the universal hepatitis B birth-dose recommendation for infants born to mothers who test negative, replacing it with “shared clinical decision-making” that allows delay until at least two months. Quote: “The committee’s decision assumes prenatal screening reliably identifies at-risk infants. It does not.” (Jake Scott, MD, CIDRAP)
• CIDRAP reported that CDC awarded an unsolicited $1.6 million grant to the University of Southern Denmark to study hepatitis B vaccination timing in newborns in Guinea-Bissau, a study that public health experts believe is unethical. Quote: “The money exists. It’s the priorities that have changed.” (Scott, quoted by CIDRAP)
• AP reported that the administration awarded a $1.6 million no-bid contract to a Danish university to study hepatitis B vaccination in African newborns, and that the plan has triggered ethical alarm because it would withhold an intervention widely viewed as effective from some infants at risk. Quote: “There’s so much potential for this to be a harmful study.” (Boghuma K. Titanji, MD, quoted by AP)

Measles resurgence highlights what happens when federal leaders stop fighting epidemic diseases

Measles coverage this week continued to point in one direction: outbreaks exploit pockets of low coverage, spread through travel and social mixing, and become harder to contain when messaging is inconsistent or absent.

• CIDRAP reported that U.S. measles activity remained concentrated in hotspots as the national total neared 2,000 cases, underscoring the scale of transmission risk and the importance of vaccination coverage and rapid response.
• CIDRAP reported on research suggesting that CDC’s limited social media activity during the outbreak left an information vacuum that was largely filled by news media, a pattern that can increase confusion during fast-moving events.
• Axios reported that South Carolina’s measles response has emphasized vaccination as a personal choice rather than mandates, even as local officials worry about spillover across state lines and the broader consequences of politicized public health. Quote: “This is just another example of why it’s important for us to have federal leadership.” (Raynard Washington, quoted by Axios)
• ContagionLive warned that sustained transmission could jeopardize U.S. measles elimination status in early 2026, framing this as a preventable outcome tied to immunization gaps and outbreak control.

Influenza season is a stress test for surveillance and public trust

CDC’s respiratory-season responsibilities depend on two things working at the same time: surveillance that can detect changes in viral activity and messaging to the public, healthcare facilities, employers, and clinicians that can translate those signals into action. This week’s flu coverage emphasized both increasing activity and the consequences of weaker uptake in high-risk groups.

• The Guardian reported that CDC officials urged vaccination and appropriate antiviral use as influenza activity increased, with particular concern given record pediatric deaths in the prior season and ongoing monitoring for viral changes. Quote: “Influenza activity is increasing in the US. The time to get vaccinated for this season is now.” (Timothy Uyeki, MD, quoted by The Guardian)