Arizona health officials have confirmed one of the rarest infections in the country: plague. A patient in rural northern Arizona was diagnosed with plague—a bacterial disease caused by Yersinia pestis—after experiencing sudden fever,

A resident of Arizona has died from pneumonic plague, health officials confirmed on Friday. This was the first recorded death from the disease in the county since 2007, Coconino County Health and Human Services reported. In that case, a person had an interaction with a dead animal infected with the disease.

Officials said the resident died from pneumonic plague, a severe lung infection. The risk to the public remains low.