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.

A resident of northern Arizona has died from pneumonic plague, health officials said Friday. Plague is rare to humans, with on average about seven cases reported annually in the U.S., most of them in the western states, according to federal health officials.

Northern Arizona Healthcare confirmed Friday a person recently died at the Flagstaff Medical Center of pneumonic plague.