Infant in Pennsylvania is one of two people reported to die of measles this week

The deaths were the first associated with measles in the state in 35 years.

One of the two people who recently died of measles in Pennsylvania was an infant, the state Health Department said Wednesday.

The department announced Tuesday that two unvaccinated residents had died of measles, the first measles-related deaths in the U.S. this year and the first in Pennsylvania in 35 years.

On Wednesday, the department said one of those deaths was under investigation by the Lancaster County Coroner’s Office, which had said it was reviewing the death of an infant with a positive measles test.

The Health Department did not specify the ages of either person who died.

Both were residents of Lancaster County, where the share of kids who have gotten the MMR vaccine fell from 95.5% in 2017 to 87.6% last year.