US faces possible loss of measles elimination status amid rising outbreak

The United States could lose its measles elimination status this week, as a panel of eight independent experts convenes in Washington, D.C., to assess the current outbreak. The Pan American Health Organization (PAHO), a regional branch of the World Health Organization, will make the final determination.

More than 5,400 measles cases have been reported nationwide, the highest number since 1991, according to the Johns Hopkins University International Vaccine Access Center tracker. Six deaths have occurred in Pennsylvania, with additional fatalities reported in New York and Wisconsin. Nearly every state is experiencing active transmission.

"That is a tremendous step backwards," said Dr. Paul Offit, director of the Vaccine Education Center at Children’s Hospital of Philadelphia.

"Independent of what PAHO says, measles is now endemic in the US. Measles has a foothold in the US. We’re going to see it this year, we’re going to see it next year," Offit added, citing a decline in vaccination rates.

Public health officials warn that loss of the formal elimination status could affect daily life. Dr. David Margolius, director of public health for Cleveland, Ohio, urged residents to locate proof of measles vaccination, noting that without documentation individuals may face blood tests or a 21-day quarantine after exposure.

The outbreak’s demographic profile has shifted, with two-thirds of cases in Pennsylvania occurring in adults, and rare instances of congenital measles reported. Offit highlighted this change in epidemiology.

The situation unfolds as the current administration contends with broader health policy challenges, including staffing reductions at the Centers for Disease Control and Prevention and previous withdrawals from the World Health Organization and the Global Vaccine Alliance. Health officials caution that vaccine hesitancy predates the present administration and that the outbreak could persist under different policy environments.

"Some of the narrative has been to pin this on our health secretary, which certainly I think he could do much more to help the situation rather than hurting the situation, but I do think the case count is climbing everywhere. This could happen even under a more pro-public health administration," Margolius said.