A person in Arizona recently died of pneumonic plague—a rare and severe form of the disease. An expert explains how the bacteria that spurred the Black Death centuries ago continues to claim lives

Arizona's Coconino County, near Flagstaff, has reported a pneumonic plague death, its first since 2007. The Arizona resident, who suffered a severe lung infection caused by the Yersinia pestis bacterium,

Arizona reports its first death from the pneumonic plague since 2007, with health officials emphasizing the disease's rarity and treatability with antibiotics.