Epizootic Hemorrhagic Disease (EHD) has been confirmed as the cause of death in over 100 deer in southwestern Oregon, the Oregon Department of Fish and Wildlife announced last week. EHD had not been observed in this region of the state before. The finding was confirmed by Oregon State University’s Veterinary Diagnostic Lab.

EHD is transmitted by gnats and causes disease in both deer and livestock. In this case, the diseased deer were black-tailed deer.

There have also been reports of more than 200 dead deer in two counties that are south of the EHD site, the press release says, but those deer where shown to have Adenovirus Hemorrhagic Disease (AHD), which is common in the area and spread through nose to nose contact.

Read the Oregon Department of Fish and Wildlife (ODFW) release here.

Photo: This black-tailed deer, which appears fatigued, died just a few days after this photo was taken. It was one of the deer that later tested positive for EHD. -Photo by ODFW-