US measles cases pass 5,400 as Pennsylvania health officials confirm seventh death
Is it spreading to new areas?
Spread confirmed
As of 13 November 2026, New Jersey health officials warned of potential measles exposures in the state, and Bucks County health officials reported the county's first confirmed case on 10 November 2026.
Endorsed measles vaccination and stated that federal outbreak response operations will not change even if the United States loses its measles elimination status.
As of 13 November 2026, confirmed measles cases in the United States have surpassed 5,400 during the nation's largest outbreak since 1991. The Pennsylvania Department of Health confirmed the state's seventh measles-associated death following the death of an unvaccinated Montour County resident, while total cases in Pennsylvania have passed 1,500.
Wisconsin health officials reported a second child death linked to the outbreak on 13 November 2026. Meanwhile, international health experts convened by the Pan American Health Organization are meeting to evaluate whether the United States retains its measles elimination status.
For medical advice, consult your national health authority and the World Health Organization. The MMR vaccine is highly effective at preventing measles, and anyone uncertain of their vaccination status should check with a doctor or local health department. This site provides public updates and is not medical advice.
Timeline
Wisconsin health officials reported an infant death linked to the state's measles outbreak.
The Pennsylvania Department of Health reported that statewide measles cases surpassed 1,500, while Wayne County Public Health in New York warned of potential exposure sites in Newark and Lyons.
The Pennsylvania Department of Health confirmed the state's seventh measles-linked death, CDC reported nationwide cases reached 5,412, and Wisconsin reported a second child death.
Original title: Pennsylvania confirms a seventh death tied to the nation’s worst measles outbreak in decades
An unvaccinated Montour County resident who tested positive for measles has died, bringing Pennsylvania's outbreak death toll to seven, state health officials told The Philadelphia Inquirer.
Original title: The US and Mexico are on the verge of forfeiting a major health victory. Here’s what to know
International health experts convened by the Pan American Health Organization are meeting to determine if the United States has lost its measles elimination status, the Associated Press reported. The meeting comes after large outbreaks across multiple states caused thousands of illnesses and about a dozen deaths over the past two years.
Original title: Lancaster County measles cases up by 20 this week; US loses measles elimination status
Lancaster County reported 20 additional measles cases in a single week, while the United States lost its measles elimination status, according to LNP | LancasterOnline.
Original title: New Jersey urges vaccination after potential measles exposures
New Jersey health officials urged residents to get vaccinated against measles following potential exposure events in the state, NBC10 Philadelphia reported.
Original title: NJ health officials warn of potential measles exposures at Walgreens, LegionsCon
New Jersey health officials warned the public about potential measles exposures at a Walgreens pharmacy and the LegionsCon convention, according to 6abc Philadelphia.
Original title: The US and Mexico are on the verge of forfeiting a major health victory. Here's what to know
International health experts are meeting to evaluate whether the United States and Mexico have lost their measles elimination status, according to news reports.