FLAGSTAFF, Ariz. — The Northern Arizona community is mourning the loss of an unnamed resident who passed away on July 11, 2025, from pneumonic plague at Flagstaff Medical Center. Health officials confirmed this is the first recorded death from pneumonic plague in Coconino County in nearly two decades, and rare—occurring only about seven times annually across the United States.
What We Know: A Sudden, Devastating Outcome
The patient arrived in serious condition at the Emergency Department and tragically died later that same day, despite immediate medical intervention. Rapid testing by both the Arizona Department of Health Services and Northern Arizona Healthcare detected Yersinia pestis, confirming pneumonic plague—a highly serious and transmissible form of the disease.
This form of plague is even rarer than its more recognized counterpart, bubonic plague—a disease spread by rodent flea bites. Pneumonic plague affects the lungs and can be transmitted through respiratory droplets, making swift treatment and diagnosis critical.
Historic Context: Bubonic Plague in Modern America
While plague may evoke images of medieval pandemics, it still exists—though sparsely—in the rural American West. Since 2000, the U.S. has recorded an average of just seven cases annually. Most occur in regions like northern Arizona, New Mexico, California, Colorado, Nevada, and Oregon; fatal cases are even rarer.
Pneumonic plague’s last death in Coconino County occurred in 2007, making this recent case an exceptional health event.
Public Health Response and Safety Measures
Local health authorities from Coconino County Health and Human Services are working alongside Arizona’s Department of Health Services to conduct contact tracing and monitor anyone potentially exposed. Protocols include monitoring close contacts, inspecting rodent populations, and testing for the presence of infected fleas.
Officials continue to emphasize that the risk to the general public remains extremely low, especially as human-to-human transmission hasn’t occurred in the U.S. since 1924.
Protecting Against Plague: Expert Guidelines
Health agencies advise residents and visitors to take preventive actions, including:
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Avoid contact with wild rodents or fallen animals
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Use DEET insect repellent and prevent flea bites
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Keep pets, especially cats, on flea preventative and away from wildlife
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Wear gloves when handling potentially infected animals; report dead prairie dogs
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Secure property by removing rodent habitats around homes
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Seek immediate medical attention for symptoms like sudden fever, cough, chest pain, or bloody sputum
A Rare, Sobering Reminder
This tragic case highlights that even ancient diseases like plague require vigilance. Modern antibiotics are highly effective against Yersinia pestis—but outcomes depend on prompt recognition and treatment. Public health authorities aim to raise awareness and prompt timely care for those in remote areas where plague still lingers.
Remembering the Lost
While the identity of the deceased remains private out of respect for the family, flags have been lowered to half-staff in Coconino County as a tribute to the individual’s life and the gravity of this rare public health loss.
The Road Ahead
As part of ongoing plague preparedness efforts, wildlife monitoring—including testing prairie dog populations and flea sampling—will continue across Northern Arizona in the coming weeks. Authorities urge residents, campers, and pet owners to stay informed, maintain safe practices, and seek veterinary care for ill animals.
