US Measles Cases Hit 35-Year High as Outbreaks Surge in Pennsylvania, New York

The United States has recorded 4,080 confirmed measles cases so far in 2026, the highest annual total in more than three decades, as outbreaks in Pennsylvania and New York push the once-eliminated disease back into communities with low vaccination rates.

The national count, reported by the Centers for Disease Control and Prevention as of October 8, already exceeds the full-year 2025 total of 2,289 cases and is the largest since 1992. Ninety-six percent of this year's cases are linked to one of 42 active outbreaks, and the CDC has confirmed two measles-associated deaths nationally in 2026, with hospitalizations running at roughly 10% of cases.

Pennsylvania's Outbreak Grows

Pennsylvania has become the epicenter of the current surge. The state's Department of Health reported 1,078 confirmed cases across 41 counties as of October 7, with 207 hospitalizations and five measles-associated deaths — making it the largest state-level outbreak the country has seen in decades. Lancaster County has been especially hard hit, state officials have said, with cases concentrated in under-vaccinated communities. Pennsylvania's health department has repeatedly urged residents to check their immunization status, noting that most cases are occurring in people who are unvaccinated or whose vaccination status is unknown.

New York Declares a Disaster Emergency

New York took the unusual step of declaring a statewide disaster emergency over measles on October 5, the first such declaration by a U.S. state since the current wave of outbreaks began. Gov. Kathy Hochul's executive order, covered by CNY Central, cited 108 cases among New York residents this year, 92 of them reported since mid-July and concentrated in under-immunized rural communities across 18 counties. "After reviewing the latest data on measles cases in New York State, I am declaring a State Disaster Emergency to strengthen our ongoing efforts to confront this disease," Hochul said. The order, which runs through November 4, lets paramedics, pharmacists and midwives administer the measles vaccine and allows nurses to order testing without a doctor's referral, part of an effort to widen access to immunization in hard-to-reach areas.

Risk to the Country's Elimination Status

The scale of this year's spread has revived concern, reported by Newsweek and other outlets, that the United States could lose the measles elimination status it was awarded in 2000, a designation that requires no single chain of transmission to continue uninterrupted for a full year. Public health researchers have been tracking several ongoing transmission chains that began in 2025 and never fully stopped.

Health officials attribute the surge largely to falling childhood vaccination rates in pockets of the country, compounded by international travelers importing the virus into under-vaccinated communities; the CDC has tied 26 of this year's cases directly to visitors from abroad. Measles is among the most contagious viruses known, capable of lingering in the air of a room for up to two hours after an infected person leaves. The CDC continues to recommend two doses of the combined measles, mumps and rubella vaccine, which it says is about 97% effective at preventing infection, as the outbreaks in the Northeast and mid-Atlantic show few signs of slowing heading into the winter travel season.