A 40-year-old woman has died from complications of measles. The woman, who was not vaccinated against measles, lived in the county of Jefferson, Pennsylvania. Her death was confirmed by the county's medical examiner. This is the third death associated with a rapidly growing measles outbreak.

The medical examiner's office is working with the Pennsylvania Department of Health on the case. The woman's death occurred on Saturday, according to a press release.

Further details about the outbreak and the woman's death are available from the source. The outbreak has also been linked to two other deaths reported in late August in Lancaster County.