Outbreak Watch

US measles outbreaks: 15 Nov 2026

The summary as it stood at the end of this day.

Status: Outbreak growing Summary written

US loses measles elimination status as nationwide cases exceed 5,400

Is it spreading to new areas?

Spread confirmed

As of 15 November 2026, health officials have confirmed recent spread to new areas, including Bucks County, Pennsylvania, alongside potential public exposure alerts in New Jersey.

Sources: NBC10 Philadelphia6abc PhiladelphiaThe Philadelphia InquirerCBS News

Key figures

FigureValueBasisAs ofSources
US Total Measles Cases
Stated by the U.S. Centers for Disease Control and Prevention (CDC)
5,412OfficialSources: U.S. News & World ReportReuters
US Total Measles Deaths
Stated by health officials as reported by NBC News and ABC News
10OfficialSources: NBC NewsABC NewsThe Washington Post
Pennsylvania Total Cases
Reported by local media citing state health data
Over 1,500Press reportsSources: PennLiveNBC10 Philadelphia
Pennsylvania Deaths
Confirmed by the Pennsylvania Department of Health and state health officials
7OfficialSources: 6abc PhiladelphiaPittsburgh Post-GazetteThe Philadelphia Inquirer
Wisconsin Deaths
Confirmed by Wisconsin health officials
2OfficialSources: CBS NewsReuters

Who says what

WhoSaysDateSources
CDC DirectorStated that the federal response to measles will remain unchanged even if elimination status is lost, while encouraging vaccination amid rising fatalities.Sources: The HillCNNBloomberg
Pennsylvania Department of HealthConfirmed seven measles-related deaths in the state and continues efforts to contain rapid transmission.Sources: WGALThe Philadelphia InquirerPittsburgh Post-Gazette
Wisconsin State Health OfficerUrged residents to seek vaccination following the second measles-related death of a child in the state.Sources: CBS NewsU.S. News & World Report
New Jersey Health OfficialsIssued public warnings regarding potential measles exposures at a pharmacy and a convention, urging residents to stay updated on vaccines.Sources: 6abc PhiladelphiaNBC10 Philadelphia

Summary

As of 15 November 2026, news outlets and global health authorities report that the United States has lost its measles elimination status after 26 years due to ongoing community transmission [d4b3fc763946224f, 50b412b71df52a73, d6e7bac4e4f3c873, 4504d159571f34d9].

Nationwide cases have passed 5,400, with at least 10 deaths reported across the country [5ce9a5eed7d66f6a, 55be8534b4597c86, 2b5402ff53aa6e05]. Pennsylvania remains a major epicenter with over 1,500 cases and seven confirmed deaths [62f48cb02f11032e, 137bb7244af5fa48], while Wisconsin has confirmed two child deaths [25a26f74e02f2417].

Timeline

  1. Bucks County, Pennsylvania reports its first confirmed measles case linked to travel within central Pennsylvania.
    Sources: NBC10 PhiladelphiaFOX 29 Philadelphia
  2. The CDC director states federal outbreak response plans will not change if the U.S. loses its measles elimination status.
    Sources: The HillReuters
  3. CDC confirms total US measles cases reach 5,412, while national deaths rise to 10 following additional fatalities in Pennsylvania and Wisconsin.
    Sources: U.S. News & World ReportNBC NewsThe Philadelphia InquirerCBS News
  4. Reports confirm the United States has officially lost its 26-year measles elimination status following persistent community transmission.
    Sources: CBS NewsThe Philadelphia InquirerCNNPittsburgh Post-Gazette

Still unknown

Reporting published on 15 Nov 2026