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Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.



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Equine Herpesvirus- Respiratory
Louisiana, United States
Alert ID: 421
January 09, 2017
On Wednesday, January 4, 2017, two horses already under quarantine in barn #36 at the Fair Grounds racetrack developed fevers of 104 and 102.1 and were tested PCR negative for EHV-1 in both blood and nasal samples. On Saturday, January 7, 2017, both horses were retested by PCR and are again negative for blood but are now positive for the EVH-1 non-neuropathogenic strain (wild type) on nasal swabs. These two horses were placed in isolation. On Friday, January 6, 2017, a horse in barn #4 spiked a fever of 103.6 and tested PCR negative on Saturday January 7, 2017 for EHV-1 on both blood and nasal samples. Another horse already under quarantine in barn #47 spiked a fever of 102.9 and it also tested PCR negative on Saturday for EHV-1 on all samples. Both horses will be retested in 72 hours. To date 7 horses have tested positive for EHV-1 at the Fair Grounds racetrack, 2 positive for the neuropathogenic strain and 5 positive for the non-neuropathogenic (wild type). The index case diagnosed with neuropathogenic EHV-1 was euthanized and the other 6 cases are in isolation. Four barns are currently under quarantine. A horse that was exposed to the positive horse in the receiving barn was traced to a livestock dealer in Pitkin, LA. That horse is now in quarantine isolation at the facility and an investigation into exposed horses is on-going. The horse reportedly has been purchased and efforts are being made to place the horse in private quarantine for monitoring and testing in so the horse to be moved to its new home out of state. Louisiana Department of Agriculture & Forestry, USDA, and Racing Commission veterinarians continue to work with track personnel in monitoring the incident at the Fair Grounds.
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