Epizootic hemorrhagic disease has been around for many years. EHD is thought to have been first found and tracked back to around 1890, and has been responsible for die-offs of many different species across North America. Diseases such as blackleg, blacktongue, bluetongue, mycotic stomatitis, or hemorrhagic septicemia were thought to have been the cause of many of these die-offs. After further analysis, the true causative agent was never confirmed. After further review of the case history and other telltale signs and lesions, seasonal occurrence, and lack of a bacterial agent suggest that they might have been EHD.“DNR Wildlife & Habitat Wildlife Disease.” DNR - Epizootic Hemorrhagic Disease (EHD) in White-Tailed Deer, Michigan Department of Natural Resources, www.michigan.gov/dnr/0,4570,7-153-10370_12150-26647--,00.html.
