The collaborative One Health strategy has been instrumental in mapping how Usutu virus and West Nile virus circulate through the Dutch ecosystem. By integrating data from human health, veterinary studies, and environmental surveillance, researchers uncovered critical transmission hotspots across the country’s wetlands and urban green spaces. This holistic approach allowed scientists to pinpoint the role of migratory birds, mosquitoes, and local wildlife in sustaining virus activity throughout the seasons, offering unprecedented insights into the viruses’ dynamic behavior and regional spread.

Key findings highlight the seasonal timing and geographic variation of viral presence,…