Jefferson County Confirms First Plague Case in Cat Since 2023

Jefferson County Public Health (JCPH) confirmed the first case of plague this year in a domestic cat near Cub Creek Park in Evergreen, marking the county's first animal case since 2023. The cat died from the illness caused by Yersinia pestis, a bacteria that can spread to both pets and humans through flea bites or direct contact with infected animals. While plague cases are rare in the U.S., Colorado sees occasional cases during warmer months, with symptoms in humans including high fever, chills, headache, nausea, and swollen lymph nodes, and in pets, fever, low energy, loss of appetite, and swollen lymph nodes. JCPH and local health officials urge pet owners to keep animals on leashes, avoid wildlife contact, use flea prevention treatments, and seek immediate veterinary or medical care if symptoms appear. Environmental Health Director Jim Rada emphasized veterinarians' role in early detection and treatment of plague in pets. Residents concerned about exposure are advised to contact healthcare providers or veterinarians promptly to reduce risks.