EHV-1 Outbreak

A New Jersey horse is euthanized after she tests positive for equine herpesvirus type-1 and progresses to the infectious neurologic strain.

The American Quarter Horse Journal
April 9, 2013

AQHA Ranching photo

To learn more about EHV-1 and EHM, visit the AQHA EHV-1 Information page. (Journal photo)

New Jersey

From the New Jersey Department of Agriculture (April 4, 2013)

The New Jersey Department of Agriculture has quarantined a Warren County farm after a 22-year-old horse developed the highly infectious equine herpes myeloencephalopathy. EHM is the often deadly, neurologic form of equine herpesvirus type-1. The infected horse had not left the premises in years.

The Thoroughbred mare was euthanized on March 31 after she had a rapid progression of neurological signs typical of EHM and subsequently tested positive for EHV-1. There are a number of other horses present at the facility, none of which have shown signs of the disease.

This is the third case of EHM in New Jersey this year. An EHM-positive horse in Somerset County prompted quarantines at two farms in January and two other farms were quarantined in February due to a sick horse in Gloucester County. No other horses in the two unrelated cases showed signs of the illness and the quarantines were lifted after 21 days of quarantine.

“The department took swift action to prevent the disease from spreading to other horses by enacting a quarantine, which stops movement of horses in and out of the farm and puts in place preventive measures to contain the virus,” said New Jersey Secretary of Agriculture Douglas H. Fisher.

The NJDA Animal Health Diagnostic Laboratory provides testing for the neurologic form of EHV-1.  For more information, visit www.nj.gov/agriculture or call (609) 406-6999. 

EHV-1 Preparedness

Please use these resources regarding EHV-1, EHM and biosecurity, brought to you by The American Quarter Horse Journal:

  • Travel Safely: Good biosecurity both at home and on the road will help keep your horses healthy.
  • The Facts on EHV-1: Recognize the signs of equine herpesvirus-1 and learn how to protect your horse from the risks of the virus.
  • Strike a Balance With EHV-1: Learn how to strike a balance between showing and protecting your herd against equine herpesvirus-1 myeloencephalopathy with tips from Dr. Tom Lenz.
  • EHV-1 Testing: AQHA Professional Horseman Al Dunning weighs in on his experience with EHV-1 testing, and Dr. Tom Lenz suggests alternatives to testing.

To learn more about EHV-1 and EHM, visit the AQHA EHV-1 Information page