The 2026 epizootic hemorrhagic disease outbreak in Wisconsin has killed at least 1,100 white-tailed deer, making it the largest in state history. The Wisconsin Department of Natural Resources confirmed the toll as the outbreak spread across five counties, with cases first appearing in July. While the virus is transmitted by midges and poses no risk to humans, it causes rapid illness and death in deer. The DNR expects the outbreak to continue until the first hard frost, which typically halts midge activity. Residents are urged to report dead or sick deer to help track the spread, though the agency notes that Wisconsin's overall deer population remains robust despite local declines.