Summary
Pennsylvania has reported a fourth measles-associated death, involving an 18-year-old, according to a 16 September 2026 report in The BMJ. The deaths are not included in the US Centers for Disease Control and Prevention’s national measles mortality tally.
Pennsylvania has reported a fourth measles-associated death, involving an 18-year-old, according to a report published by The BMJ on 16 September 2026. It follows three other recent measles-associated deaths reported in the state.
The deaths are not included in the US Centers for Disease Control and Prevention’s (CDC) national tally of deaths from measles. That difference reflects the distinction between a death associated with an infection and a death recorded with measles as the underlying cause in federal mortality records.
Why the Pennsylvania reports differ from the CDC tally
The BMJ report says the first two deaths were briefly referenced in CDC materials as measles-associated deaths, but that the agency later changed the relevant page. The CDC said federal death records did not currently list measles as an underlying cause of death in 2026 and that it was working on a standardised process.
A measles-associated classification can involve a death in which measles contributed to the clinical course, while national mortality counts may depend on how death certificates and underlying causes are coded. The Pennsylvania reports and the CDC tally therefore represent different stages or methods of recording the deaths rather than necessarily describing different events.
What the report establishes
The available evidence is a public-health death report, not a clinical trial or epidemiological study. It identifies the newly reported case as involving an 18-year-old and places it among four recent measles-associated deaths in Pennsylvania. The report does not provide clinical details, vaccination status, complications, or the formal cause-of-death records for the individuals.
The immediate significance is that the reported Pennsylvania total has reached four while the federal national tally remains lower because these deaths have not been included in it. Further interpretation depends on the standardised classification process and the final federal mortality records.