An untreatable disease usually found in deer during the late summer and early fall is hitting cattle herds in Nebraska, South Dakota, Indiana and Iowa.

Epizootic Hemorrhagic Disease (EHD) is a viral disease spread by midges or gnats. The disease has been reported in over a dozen states and is wiping out a record number of deer. Although cattle are usually unaffected by the disease because their bodies can fight the disease, more cases are being reported this year.

The Rapid City Journal reports infected cattle show signs of fever, ulcers in the mouth and gums, excessive salivation and lameness or stiffness when walking. The disease is not deadly to cattle, but there’s no proven way to treat the disease