An Arizona resident has died from the plague as officials were probing whether a prairie dog die-off in the area was also tied to the lethal illness.

A previous version of this story incorrectly stated when plague was first introduced to the U.S. Plague first occurred in the U.S. in 1900. A Northern Arizona patient died this week after becoming infected with a severe form of plague,

Officials confirmed one person died of pneumonic plague just days after a prairie dog die-off believed to be related to plague.

Amid a prairie dog die-off near Flagstaff, one person in Northern Arizona has died from the plague after being hospitalized with severe symptoms.

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.

On the grasslands a few miles from the pinnacles and spires of Badlands National Park, federal wildlife officials have been waging a war since spring to save one of the nation's largest colonies ...