A South Lake Tahoe resident has tested positive for the plague, historically known as the “Black Death,” just over a month after an Arizona resident died from the disease. The California Department of Health confirmed the case, noting the individual was likely bitten by an infected flea while camping. The patient is recovering at home with medical care, and officials are investigating while urging caution in the area.
The plague, caused by Yersinia pestis bacteria, is uncommon in the US, with the CDC reporting roughly seven cases annually. This is the first reported case in South Lake Tahoe since 2020, following two cases in 2015 linked to Yosemite National Park exposure.
Known for wiping out up to half of Europe’s population in the 14th century, the Black Death is now treatable with antibiotics. Bubonic plague, the most common form, results from infected flea bites, while pneumonic plague, a more severe type, can develop if untreated and affect the lungs.
The Arizona death in July, caused by pneumonic plague, was the county’s first plague-related fatality since 2007. The individual had contact with an infected dead animal, highlighting the risks of interacting with wildlife.
Bubonic plague symptoms typically emerge within two to eight days, including fever, chills, headaches, swollen lymph nodes, and weakness. While the disease is no longer present in the UK, it persists in parts of the US, particularly in higher-elevation regions like El Dorado County.
Kyle Fliflet, El Dorado County’s acting public health director, noted, “Plague is naturally present in many parts of California, including higher elevation areas of El Dorado County.” He stressed the importance of precautions during outdoor activities.
Health officials advise avoiding contact with wild rodents like squirrels and chipmunks, especially if they are dead or injured, as these animals can carry plague-infected fleas. This precaution extends to pets, which can also bring fleas home.
The Arizona case underscored the dangers of handling dead animals, which can transmit the bacteria. Pets are particularly vulnerable to carrying infected fleas, increasing the risk of human exposure.
To reduce plague risk, officials recommend vigilance while hiking, camping, or walking in areas with wild rodents. Protecting pets from fleas and avoiding rodent contact are critical preventive measures.
Although rare, the recent cases have heightened concerns about potential plague spread. Authorities in South Lake Tahoe are urging residents to remain cautious in outdoor environments.
Investigations are ongoing, with officials monitoring for additional cases. The public is encouraged to report unusual rodent activity and seek medical attention if plague symptoms appear after possible exposure.