A rare respiratory illness known as pneumonic plague killed one Arizona resident. Know signs and symptoms and treatments to take in the event when you contract with the deadly plague bacterium.

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.

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.