CDC Faces Growing Questions Over How It Counts Measles Deaths

The US Centers for Disease Control and Prevention (CDC) is facing intense pressure to explain why it is not currently counting four measles deaths from Pennsylvania. While the agency recently updated its national dashboard, these deaths remain missing from the official total. This situation has caused concern among public health experts and members of Congress, who have requested an immediate briefing to understand why the reporting process has changed.

The controversy began when the US Department of Health and Human Services (HHS) asked the CDC to change how it reports deaths related to measles. Following this request, the CDC removed the Pennsylvania deaths from its website, replacing the number with an asterisk. This mark points to a note explaining that the agency is working with the Council of State and Territorial Epidemiologists (CSTE) to create a new, standardized definition for what counts as a "measles death." A death definition is a set of rules used to decide if a specific illness is the official cause of a person's passing.

According to MedPage Today, the CSTE workgroup was actually formed earlier this summer to improve future guidance, rather than as a direct response to the current outbreak. CSTE spokesperson Amy Heldman noted that this is part of a normal process to ensure that states and federal agencies agree on how to track diseases. However, the timing of the announcement has raised questions. A source within the CDC, who spoke on the condition of anonymity, suggested that the move might be intended to make it harder to confirm measles deaths. The source noted that some officials may want the definition to be as strict as possible to lower the official death count.

Meanwhile, the situation on the ground in Pennsylvania is becoming more serious. Dr. John Goldman, an infectious disease specialist at the University of Pittsburgh Medical Center, says the outbreak is accelerating. He reported that doctors are now seeing "congenital measles," which affects newborns who catch the virus before or during birth. This form of the disease was once very rare because most pregnant people were protected by vaccines. "We’re literally seeing new forms of measles," Dr. Goldman said. "We don’t have a lot of information about what happens with it."

Data from the state of Pennsylvania shows 792 total cases for 2026, but experts believe this is an undercount. Dr. Goldman explained that many people who are sick at home are never tested, meaning they are not included in the official count. Debra Houry, a former CDC chief medical officer, agreed that the current numbers do not match what doctors are seeing in hospitals. She noted that when testing is low, it becomes much harder for health officials to track the spread of the virus or tell sick people to isolate, which means staying away from others to prevent the spread of a disease.

There is also confusion regarding which data systems the CDC is using. The agency stated it is currently relying on the National Center for Health Statistics (NCHS) to identify deaths. However, experts point out that the NCHS is not designed to track active outbreaks. Historically, the National Notifiable Diseases Surveillance System has been used for this purpose, as it collects real-time information directly from states. By moving away from this system, critics argue the CDC is creating unnecessary delays.

As the outbreak continues to spread to other states, including Texas, South Carolina, and Utah, the need for clear information is growing. Providers are preparing for more patients, and many fear that the death toll will continue to rise. Dr. Goldman warned that the situation is unlikely to improve until more people gain immunity, either through vaccination or by recovering from the infection. "It’s not rocket science," he said. "If we see more measles, we’ll see more deaths."

For now, the public is left with an incomplete picture of the outbreak. As Congress continues to demand answers, the CDC has yet to explain why the Pennsylvania records were removed or when a new definition for measles deaths will be finished. Until then, the asterisk on the CDC website remains a symbol of a growing disagreement over how the United States tracks and reports this dangerous, preventable disease.