The Pennsylvania measles outbreak

Wat er veranderde

• No precise national total beyond the 3,000 threshold and no exact Pennsylvania totals beyond the more-than thresholds have been established.Pennsylvania recorded 1,260 cases across 43 counties on October 16; the CDC recorded 4,410 confirmed U.S. cases through October 15.
• 1,260Pennsylvania cases in the October 16 update
• 43Pennsylvania counties with reported cases
• 4,410U.S. confirmed cases through October 15

Toen nog open

• No announced county name, exact date of death, or detailed case history has been specified beyond age and vaccination status.
• Whether Pennsylvania's caseload keeps climbing and whether Washington treats measles as real and preventable.
• Whether hospitals see more severe complications — pneumonia, brain swelling, hearing loss — as the outbreak spreads.

Wat er veranderde

• 5Pennsylvania associated deaths announced by September 30
• 903Cases in the September 28 state update
• 2Federal deaths in September 29–30 reporting

Toen nog open

• No announced county name, exact date of death, or detailed case history has been specified beyond age and vaccination status.
• No precise national total beyond the 3,000 threshold and no exact Pennsylvania totals beyond the more-than thresholds have been established.Beantwoord in update 3 ›
• Whether Pennsylvania's caseload keeps climbing and whether Washington treats measles as real and preventable.
• Whether hospitals see more severe complications — pneumonia, brain swelling, hearing loss — as the outbreak spreads.

Wat we eerst wisten

• 3,000+U.S. measles cases, most since 2000 elimination
• 670+Pennsylvania people sickened in outbreak
• 120+Pennsylvania people hospitalized
• 3Pennsylvania measles deaths in 2026
• Pennsylvania's third 2026 measles death was a 40-year-old unvaccinated woman.
• The state outbreak exceeds 670 cases with more than 120 hospitalizations.
• U.S. cases have topped 3,000, the most since elimination in 2000.

Toen nog open

• No announced county name, exact date of death, or detailed case history has been specified beyond age and vaccination status.
• No precise national total beyond the 3,000 threshold and no exact Pennsylvania totals beyond the more-than thresholds have been established.Beantwoord in update 3 ›

Waar we op zouden letten

• Whether Pennsylvania's caseload keeps climbing and whether Washington treats measles as real and preventable.
• Whether hospitals see more severe complications — pneumonia, brain swelling, hearing loss — as the outbreak spreads.