The resident died from pneumonic plague, the first such death in Coconino County, Ariz., since 2007, the county said.

Coconino County has confirmed its first human death from the plague in nearly two decades. Health officials say a Coconino County resident has died from pneumonic plague — a rare but serious lung infection.

The patient was recently treated at an emergency department in Flagstaff and died the same day, Northern Arizona Healthcare said.