Pennsylvania Surpasses 1,500 Measles Cases In 2026

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Photo: YURI CORTEZ / AFP / Getty Images

The measles outbreak in Pennsylvania has reached a significant milestone, with the state reporting 1,505 cases as of Monday (November 9). According to the Pennsylvania Department of Health, these cases span 45 counties and include 290 hospitalizations and six measles-associated deaths.

Lancaster County, home to the largest Amish population in the U.S., accounts for about a third of the cases. The outbreak is part of a larger national resurgence, with the Centers for Disease Control and Prevention (CDC) reporting 5,182 confirmed measles cases nationwide as of November 5.

Health officials emphasize the importance of vaccination, noting that the two-dose measles, mumps, and rubella (MMR) vaccine is 97% effective in preventing measles. The Philadelphia Inquirer reports that the outbreak has led to increased demand for vaccinations, with Pennsylvania providers administering over 56,000 MMR doses in September and more than 53,000 in October.

Dr. David Damsker, Director of the Bucks County Health Department, stated, "The most effective way to protect yourself and your loved ones from measles is vaccination." The outbreak has also prompted discussions among international health leaders about whether the U.S. will retain its measles elimination status, a designation it has held since 2000.