These insects transmit EHD to susceptible animals via bloodmeals. Historically, the animals at greatest risk are the older ones in the herd. The rate of illness declines sharply following the first frost, which removes the insect carrier. EHD and bluetongue can be diagnosed by blood tests. Your veterinarian should be called and a diagnosis confirmed in any case where cattle have erosions or ulcers on the mouth or coronary band.
Treatment is aimed at alleviating the symptoms of the disease.
Some veterinarians use systemic antibiotics to prevent secondary bacterial infections and nonsteroidal anti-inflammatory drugs to help control fever and pain. Fresh water and soft, palatable feed must be provided to animals reluctant to stand or eat. Previous Vet Calls Copyright 1998, Angus Productions Inc.