Epizootic Hemorrhagic Disease

Hemorrhagic disease is a suite of viruses that occur annually in white-tailed deer populations and can lead to internal hemorrhage, emaciation, hoof sloughing, lameness, and oral ulcers.

Hemorrhagic disease is an illness of wild ruminants caused by epizootic hemorrhagic disease (EHD) or blue tongue (BT) viruses.  EHD and BT viruses are common in the

Deer infected with HD found dead in water.
White-tailed deer infected with HD found dead in water.
Ulceration in the tongue of a white-tailed deer with acute HD
Hoof sloughing of a white-tailed deer infected with chronic HD

southeast with highly variable herd infections occurring annually.  Infected deer may not show initial signs, though as the disease progresses they can exhibit: swollen tongue, neck, or head; lack of appetite; emaciation; tameness; excessive salivation; hoof sloughing; lameness; oral ulcers; internal hemorrhages and/or rumen papillae sloughing which can eventually lead to death.  Deceased deer are commonly found near or in water sources.  Some deer herds in Florida have innate resistance to EHD and BT viruses. Transmission occurs through biting flies in the late summer or early fall. The diseases can be infectious to domestic ruminants, though most do not show signs of illness.  As with any game suspected of being ill, it is not advisable to consume meat from sick deer.  Please report any deer sick or dead of unknown causes in Florida to the CWD hotline at (866) 293-9282.


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