Fourth measles death reported in Pennsylvania amid 600-case outbreak

An 18-year-old and a 40-year-old, both unvaccinated, plus two infants have died in Pennsylvania in the state’s measles outbreak that has infected more than 600 people, officials said.

The Mifflin County coroner reported the 18-year-old died of acute encephalomyelitis, a severe neurological complication of measles. A Jefferson County coroner listed respiratory failure due to measles for the 40-year-old. Lancaster County authorities said a six-week-old with a rare genetic condition, Amish lethal microcephaly, died of measles on 18 August, and another infant who tested positive for measles died on 14 August with a primary cause recorded as spleen laceration.

State health investigators said they conducted rigorous reviews with coroner offices to confirm the deaths were caused by measles, including clinical evidence and positive laboratory tests, and to rule out unrelated causes. The Pennsylvania Department of Health reiterated that those steps informed their determinations.

Officials noted the outbreak has been concentrated primarily in Lancaster County and that the United States eliminated measles in 2000; public statements by Governor Josh Shapiro on social media highlighted the resurgence amid lower vaccination rates.

Liberal News Analysis: What Does This Development Mean?

State and local authorities confirmed four deaths linked to the current Pennsylvania measles outbreak through coroner findings and laboratory confirmation. The deaths include two unvaccinated adults and two infants, with causes recorded as acute encephalomyelitis, respiratory failure due to measles, and complications related to measles infection such as spleen rupture. Officials emphasized investigatory steps used to attribute cause of death.

The health secretary noted national and global increases in measles cases and the Centers for Disease Control and Prevention will update fatality counts after completing its reviews. Governor Josh Shapiro publicly attributed the resurgence to lower vaccination rates, while the state health secretary raised concerns about misinformation from other officials questioning the measles attribution in infant deaths.

Quick Glance: What You Need to Know

• Four people have died in Pennsylvania linked to the current measles outbreak, including two adults and two infants.
• The outbreak has infected over 600 people, concentrated mainly in Lancaster County.
• State investigations included clinical evidence and positive lab tests to confirm measles as the cause of death.