Measles deaths rise as U.S. sees worst outbreak since 1991, CDC reports four fatalities in Pennsylvania

The Centers for Disease Control and Prevention has added a measles death to its online counter, highlighting a recent increase in fatalities.

State officials in Pennsylvania say four unvaccinated people have died from measles in the past few weeks, pushing the United States to its worst outbreak since 1991.

Public health experts attribute the surge to low vaccination coverage and are urging communities to improve immunization rates to prevent further spread.