Neurological Virus in HorsesBorna Disease in Horses
Borna is a viral disease that occurs in horses (and other warm-blooded animals). First discovered in horses in Germany, it is predominantly a disease found in European and Middle Eastern countries today. It is not known to be currently in the United States.
The Borna disease virus (BDV) causes neurological problems and is fatal in many horses. Horses as well as sheep and other farm animals are natural hosts for this virus, but other animals such as rodents can be affected.
Symptoms and Types
The clinical signs of Borna virus are similar to other equine encephalitic diseases. The incubation time is relatively lengthy and can take upwards of six months from time of infection until clinical signs emerge. This is due to the slow movement of the virus along neurons.
Causes
The mode of viral transmission is still unknown but is thought to be via inhalation or ingestion. Tick transmission is also suspected, as is the spread of the virus via migratory birds.
Diagnosis
Definitive diagnosis of Borna virus infection on a live horse is difficult. Samples of cerebral spinal fluid (CSF) only show results typical of many different infectious neurological conditions and cannot distinguish Borna virus specifically. After death, samples of the central nervous system can be sent to laboratories for further examination and identification of the Borna virus made by made at this point. Share this page![]() 0 COMMENTS
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