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

Coconino County Health and Human Services recently received a report of a prairie dog die-off on private land northeast of Flagstaff.

An Arizona resident has died from pneumonic plague, a rare but highly dangerous lung infection, Coconino County health officials confirmed on Friday. This incident marks the first death from the disease in the county since 2007,