A sudden and tragic death in Northern Arizona has jolted both local officials and public health experts. A resident died from the plague within just 24 hours of showing symptoms, marking one of the rare but serious instances of the disease in the United States. The person, who has not been publicly identified, was rushed to Flagstaff Medical Center in critical condition but succumbed the same day. An autopsy confirmed the presence of Yersinia pestis, the bacterium responsible for plague.The case has sparked renewed concern, especially as it occured at the same with a reported die-off of prairie dogs near Flagstaff, an ecological warning sign that the plague may be spreading through local wildlife.Though it’s often associated with the Black Death of the 14th century, which wiped out millions in Europe, plague is far from extinct. In fact, it continues to appear in small pockets across rural parts of the western United States—including areas of Arizona, New Mexico, and Colorado.According to the CDC, the U.S. reports an average of seven human plague cases annually. Most of them are bubonic plague, and the disease remains treatable with antibiotics—if caught in time.The recent Arizona case is a stark reminder of how fast and fatal plague can be if untreated. Coconino County health officials said symptoms can appear within 1–8 days of exposure, and immediate medical care is essential to survival.While officials have withheld the identity and demographic details of the deceased, their rapid deterioration has been linked to an ongoing investigation into unusual prairie dog deaths northeast of Flagstaff. These rodents, commonly found across the Southwest, are known to harbor fleas that can transmit Yersinia pestis.“Prairie dogs are highly susceptible to plague but are not considered long-term reservoirs of the disease,” the county stated. However, their die-off is often the first sign that plague is circulating in the environment.Authorities are working with private property owners to collect flea samples from affected areas. So far, no other human cases have been confirmed.What Is Yersinia pestis?Yersinia pestis is a highly infectious bacterium that causes plague. It spreads primarily through bites from infected fleas or direct contact with infected animals, especially rodents. Humans may also become infected through handling contaminated animal tissues or inhaling respiratory droplets from an infected person or animal.Despite its ancient roots, modern plague is very much a public health concern and if left untreated, it can quickly escalate into a medical emergency.3 Forms of PlaguePlague manifests in three distinct ways, depending on how the infection spreads in the body:Bubonic PlagueThe most common form, often spread by flea bites. Symptoms include fever, chills, extreme fatigue, and painful, swollen lymph nodes (called buboes). If treated promptly with antibiotics, survival rates exceed 90%.Septicemic PlagueThis form affects the bloodstream and can arise from untreated bubonic plague or direct infection. It’s more severe and presents with symptoms such as abdominal pain, bleeding under the skin, and tissue death—often turning fingers, toes, or the nose black. Left untreated, it is often fatal.Pneumonic PlagueThe rarest and most dangerous form, pneumonic plague infects the lungs. It can be transmitted from person to person through airborne droplets, making it the only contagious form. Symptoms include fever, chest pain, cough, and difficulty breathing. Without treatment, it progresses rapidly and is often fatal.In the Arizona case, the resident reportedly died within a day of showing symptoms, underscoring the disease’s swift progression. According to health officials, timing is everything. Plague must be treated within 24 hours of symptom onset for the best outcome.The last significant outbreak in Arizona occurred in 1996, when two out of five infected individuals died. In both cases, a delayed diagnosis was the critical failure. One of them, an 18-year-old, likely contracted the disease after walking through a prairie dog colony in Navajo County. Traces of Yersinia pestis were later found in the fleas of pet dogs in the area.Risk Factors and Tips to Stay Safe Related to PlagueWhile plague is rare, it remains a risk in certain rural areas where wild rodent populations are common. Arizona’s Department of Health and the CDC recommend the following precautions:Avoid contact with wild rodents, especially sick or dead animals.Use flea control products for pets and avoid letting them roam in areas with prairie dogs or wild rabbits.Clear clutter and debris around homes to deter rodent nesting.Stay away from burrows or animal dens, particularly when camping or hiking.Report unusual animal deaths, particularly among prairie dogs or squirrels, to local authorities.Residents experiencing fever, swollen glands, or flu-like symptoms following exposure to wild areas should contact their physician immediately and mention possible rodent or flea exposure.Is the Plague Coming Back?No. While the term “plague” conjures images of medieval pandemics, modern medicine has kept it in check. Still, experts caution against complacency.“People hear ‘plague’ and think it’s a relic of the past,” said a public health official from Coconino County. “But for those of us in rural areas of the West, it’s something we monitor every year.”The plague hasn’t gone anywhere—it’s just rare. And in the few places where it remains endemic, vigilance is essential.If you're in a region where plague is known to exist, take precautions seriously. Public health officials stress that education, awareness, and prompt action are the most powerful tools we have to prevent future tragedies like this one.