EHV1 Update from Dr. Viren:

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3/9/15 Update

The quarantine ended on 3/6/15 for the farm in Prior Lake. This incident was an excellent example of early detection, isolation and biosecurity to contain an infectious and contagious disease. Please remember that EHV1 is a disease that can affect any horse at any time by re-activation of latent virus.
The horses from the farm that was affected are now free to travel and go about normal equine activities. I expect that the equine community will welcome these horses at all equestrian activities. Veterinarians can and will write health certificates for these horses to travel. Any misunderstandings about EHV1 should be discussed with your veterinarian. Last year, many individuals in our equine community were treated like "toxic waste" by some members of our equine community. This type of behavior is unjustified and inappropriate. Please feel free to call if you have any questions about EHV1. Dr. Bruce Viren 952.447.4118

EHM Update 2/13/15

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Last Friday night at 5:00 p.m. (2/6/15), I was called to see a horse at a farm in Prior Lake. The horse was exhibiting signs of neurologic disease. Wednesday night (2/11/15), I was informed that the horse was confirmed EHV1 positive with EHM (Equine Herpes Myeloencephalopathy). EHM is a reportable disease in Minnesota. We just received notice this morning that the strain of EHV1 that we are dealing with is the "wild type" and not the mutated strain. At noon yesterday, the State of Minnesota Board of Animal Health imposed a quarantine until February 28, 2015. Click here for the announcement. This date will change if any more horses are diagnosed with EHM.
All horses on the farm are considered to be EHM exposed until the end of the quarantine.
The quarantine means:
1) No movement of horses to or from the farm.
2) All horses on the farm will be required to have their temperature taken twice a day and recorded.
3) All horses on the farm should be monitored for any symptoms of EHV such as nasal discharge, incoordination, hind limb weakness, loss of tail tone, lethargy, urine dribbling, head tilt or inability to rise.
4) Horses with a temperature greater than or equal to 102 or horses exhibiting symptoms consistent with EHV1 infection are required to be officially tested for EHV1.
The best way to stop the virus is to practice strict biosecurity measures. Isolation and quarantine measures are very effective in stopping the EHV1 virus. The farm has a biosecurity program in place.
The Prior Lake farm is a premier equestrian facility with excellent care. You can find more details about this situation on our website and Facebook page.
In addition, please feel free to call me at any time if you have questions or concerns. I am happy to take your phone call and provide accurate information.
CELL PHONE: 612.919.6152
Bruce Viren, DVM
River Valley Veterinary Service