A rare and serious complication of measles is resurfacing in the U.S., prompting health officials to urge doctors to remain vigilant. The Pennsylvania health department has flagged a rise in measles cases among pregnant individuals, alongside growing concerns over congenital measles—a condition where newborns contract the infection from their mothers. Experts warn that the disease, which was once considered nearly eradicated in the country, poses significant risks to both pregnant individuals and infants. The alert highlights the need for heightened awareness and preventive measures amid the unexpected resurgence.


The Pennsylvania health department issued a warning to doctors Monday about an increase in measles cases during pregnancy, along with rising concern about congenital measles, a disease rarely seen in the U.S. The department’s alert said congenital measles — a measles infection in a newborn contracted from the mother — was identified “for the first...