A recent measles outbreak in Pennsylvania has caused weeks of political bickering between Democrats, Republicans and public health officials, most notably between Pennsylvania Governor Josh Shapiro and United States Secretary of Health Robert F. Kennedy Jr. But what exactly are the sides arguing about, and how did this once-uncontroversial issue become such a heated topic?
Measles is a highly contagious virus and disease that killed millions of people every year for centuries until the development of an effective vaccine in 1963. Since 2000, many considered the threat of measles to be eliminated in the United States. The US saw practically no measles deaths until 2025, when the virus killed three Americans.
In late August, Shapiro announced the measles-related deaths of two unvaccinated individuals in Lancaster County, the first measles deaths this year. In announcing the deaths, he also criticized Kennedy for spreading misinformation and “scaring people” about the safety of the measles vaccine. Kennedy for years had advocated against vaccines and has argued that vaccines cause autism, a claim that has been scientifically rejected.
Kennedy in turn criticized Shapiro for failing to provide details about the measles victims to the federal Centers for Disease Control and Prevention (CDC). The alleged lack of transparency from the Shapiro administration led Kennedy to wonder if the measles deaths really happened at all. The CDC currently lists no deaths from measles on its website for 2026, and the Lancaster County Coroner has corroborated only one of the deaths as being from measles, despite the Shapiro administration’s findings.
The contradicting information from the various agencies has opened up the door for the increased spread of misinformation, according to health officials like Paul Offit, a physician with the Children’s Hospital of Philadelphia.
Offit and other experts spoke to The Philadelphia Inquirer, saying that the failure for the Shapiro administration and the CDC to communicate effectively has led to further conspiracy theories about vaccine safety.
Another issue regarding the measles outbreak, which has inflected 577 Pennsylvanians as of Labor Day, has caused political tensions in Harrisburg.
The Shapiro administration is proposing new medical regulations controlling disease-reporting requirements, disease-response procedures and quarantine protocols. Republicans are pushing back against the proposals, saying they represent governmental overreach and are similar to the policies enacted during the height of the COVID era, which Republicans routinely labeled “oppressive.”
State Representative Russ Diamond (R-Lebanon) implicitly accused Shapiro of only announcing the measles deaths in order to justify the proposed regulations, which are, in Diamond’s words, “draconian.”
The finger-pointing is spilling into the upcoming elections as well. Pennsylvania treasurer Stacy Garrity, who is Shapiro’s Republican challenger in the November governor’s race, also indicated that Shapiro’s measles deaths announcement was staged and partisan, and warned that the proposed regulations were dangerous.
Other public health experts who spoke to the Inquirer warned that the political fury about the measles outbreak is taking precious time and resources away from those who are actively working to slow the spread of this disease. Because this disease hits hardest in undervaccinated communities, they say, allegations of political theater and conspiracies about vaccine safety are putting more Pennsylvanians at risk. Nevertheless, the furor currently shows no signs of slowing down.
