The Companion Animal Parasite Council (CAPC) has issued its 2026 Pet Parasite Forecast, indicating a persistent increase in the risk of vector-borne diseases throughout the United States. This includes a projected expansion of Lyme disease, ehrlichiosis, anaplasmosis, and heartworm. Derived from analyzing over 10 million veterinary diagnostic test results annually, these forecasts are designed to equip veterinarians with insights into anticipated regional disease trends, enabling them to refine prevention strategies and testing protocols.
CAPC's projections highlight that Lyme disease, traditionally prevalent in the Northeast and Upper Midwest, is now expected to spread into additional areas such as parts of the Midwest, Appalachia, and the Northern Plains. Heartworm disease continues to pose the highest risk in the Southeast, with its northward progression along major river systems and coastal regions, and the emergence of new clusters in western states. Furthermore, tick-borne diseases like ehrlichiosis and anaplasmosis are also expanding their reach as tick populations extend their geographical habitats, raising concerns about potential year-round transmission in certain localities.
The council stresses the critical importance of continuous parasite prevention throughout the year, regular annual testing, and leveraging localized surveillance data to inform clinical decisions. Veterinary professionals are strongly encouraged to utilize CAPC's comprehensive resources, which include monthly 30-day parasite forecasts and up-to-the-minute flea activity maps. These tools are invaluable for conducting regional risk assessments and effectively educating pet owners. CAPC frames its forecasts as an integral component of the One Health initiative, linking the well-being of animals, humans, and the environment.
These detailed forecasts serve as a crucial early warning system for veterinary practices, allowing for timely adjustments in patient care and public health advisories. By understanding the predicted shifts in disease prevalence, veterinarians can better protect companion animals and contribute to broader community health efforts. The proactive dissemination of this information underscores CAPC's commitment to mitigating the impact of parasitic diseases through data-driven approaches and collaborative health strategies.