The Centers for Disease Control and Prevention has taken the unusual step of excluding two measles-related deaths reported by Pennsylvania from its official weekly tally, questioning whether the virus actually caused the fatalities. The move marks a sharp break from the agency's long-standing practice of accepting state-reported data without public challenge, and it has thrust the CDC into the middle of a political battle between Democratic Governor Josh Shapiro and Health Secretary Robert F. Kennedy Jr.
The dispute centers on two deaths announced by Pennsylvania's Department of Health on August 25. The state described them as "measles-associated," a term used when the virus is present but may not be the direct cause of death. One victim was a newborn with a ruptured spleen; details of the second case have not been disclosed. Both were unvaccinated residents of Lancaster County and tested positive for measles.
The CDC's weekly update, typically posted on Fridays, was delayed until Sunday and then edited multiple times. An asterisk on the agency's website now states that the two deaths are under review, and that "available information does not establish whether measles caused or contributed to the deaths or whether the individuals died from other causes while infected with measles." The agency says it will update the national count once it receives additional information.
The decision comes under new CDC Director Erica Schwartz, who took office this month pledging to operate independently from Kennedy. It also highlights a growing rift between federal and state health authorities over how to handle the outbreak, which has sickened 497 people and hospitalized 87 in Pennsylvania as of Monday.
Governor Shapiro, who held a press conference last week to announce the deaths, blamed Kennedy and the Trump administration for undermining vaccine confidence. "When the information we see coming from the federal government, in some cases, isn't driven by facts and by science, it makes it even more confusing for parents," Shapiro said.
Kennedy fired back on social media, suggesting the deaths may have been "fabricated by one of the Governor's hopeful staffers" to score political points. The CDC's official X account echoed that skepticism, posting: "We appreciate Secretary Kennedy's efforts to clarify conflicting information from Pennsylvania officials about whether the two reported deaths were caused by measles. CDC is working to determine what actually occurred."
State health officials insist they have followed proper protocol. Neil Ruhland, a spokesperson for the Pennsylvania DOH, said every reported measles case is "thoroughly reviewed to confirm it meets CDC's case definition," and that the state has "provided all required epidemiological data to the CDC regarding the two measles-associated deaths."
The CDC's decision to question state data is a departure from its usual role. During last year's West Texas measles outbreak, former CDC Chief Medical Officer Deb Houry noted that the agency typically does not adjudicate cases or deaths. "CDC doesn't adjudicate those cases or deaths," she said. In Texas, the state reported two deaths and the CDC included them in its dashboard without public dispute.
This clash also reflects broader tensions over vaccine policy. Kennedy has long questioned vaccine safety, and his comments have fueled distrust among some parents. Shapiro and other Democrats have seized on the outbreak to criticize the administration's messaging. The dispute has become a flashpoint in the ongoing debate over federal versus state authority in public health, with both sides accusing the other of politicizing a tragedy.
The CDC says it remains committed to providing accurate information, but the delay has left families and local officials in limbo. As the outbreak continues, the question of who controls the official narrative—and who determines the true cause of death—has become as contentious as the disease itself.
