The U.S. Centers for Disease Control and Prevention says plague in humans is relatively rare, with about seven human cases reported annually across the country.

Coconino County officials said it’s the first recorded death from Pneumonic plague there since 2007 when an individual had an interaction with a dead animal infected with the disease.

A hyperbaric chamber caught fire in Arizona, leading to the gruesome death of a 43-year-old man inside the highly pressurized, oxygen-filled compartment, authorities said Thursday.