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Disease Outbreak Alerts

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.


January 01, 2017
Equine Herpes Viruses
Inyo County, CA
Quarantine Released
After repeated negative test results from confirmed cases, the premises in Inyo county has been released from quarantine. For background information go to: https://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html
December 31, 2016
Equine Herpes Viruses
New Orleans, LA
Confirmed case(s): Official Quarantine
On December 30, 2016 a horse in barn #14 at the New Orleans Fairgrounds Racetrack spiked a fever and was placed in quarantined isolation. The horse has tested positive for EHV-1 neuropathogenic strain in blood and nasal lavage. The horse is not showing neurologic signs and is being closely monitored and is under the care of a private veterinarian. Strict biosecurity is in place at the quarantine isolation facility. Exposed horses in barn #14 continue to have their temperatures monitored twice daily and enhanced biosecurity measures remain in place. Louisiana Department of Agriculture & Forestry, USDA, and Racing Commission veterinarians and Fairgrounds personnel are onsite and are monitoring the incident. For more information on EHM go to www.aaep.org/custdocs/EHMFactsheetFINAL.docx
December 30, 2016
Equine Herpes Viruses
Los Angeles County, CA
Outbreak Update
There are currently no horses on the Los Angeles Equestrian Center premises shedding EHV-1 virus. The isolation barn area will continue under quarantine as additional EHV-1 testing will occur on the two horses remaining in isolation – both horses are now negative on nasal swab PCR testing. Enhanced biosecurity measures continue for quarantined horses and horses’ temperatures continue to be monitored twice daily. The last febrile case occurred on December 12, 2016. The next update will be on January 3, 2017
December 29, 2016
Equine Herpes Viruses
New Orleans, LA
Outbreak Update
As of December 29 2016: Barn #14 at the Fair Grounds racetrack is under quarantine and the 46 exposed horses are being monitored with temperatures taken twice daily. Enhanced biosecurity is in place for the barn and high traffic areas at the track and an after-hours exercise program has been implemented for the quarantined horses. A quarantine-isolation facility has been readied for use if a horse spikes a fever. Trainers in other barns have been advised to voluntarily monitor their horses’ temperatures and copies of a tracking log were distributed. Track records show that 8 horses left Barn 14 since Dec 20, 2016 when the index case became febrile and 7 of those horses are still at the Fairgrounds in other barns and are being monitored. The 8th horse reportedly has left the premises and its destination is still under investigation. LDAF, USDA, and Racing Commission veterinarians, and track personnel are monitoring the incident on-site and updates will follow.
December 28, 2016
Equine Herpes Viruses
Inyo County, CA
Outbreak Update
As of December 28, 2016, there are no new cases in the equine herpesvirus myeloencephalopathy outbreak in Inyo county, California. The premises continues in quarantine and California Department of Food and Agriculture continues to monitor the situation. All confirmed positive horses continue to show improvement and are recovering.  Additional testing of the previously three confirmed cases occurred today and results from CAHFS laboratory will be released Dec. 29th.  For additional information go to: https://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html
December 28, 2016
Equine Herpes Viruses
Los Angeles, CA
Outbreak Update
As of 7 AM on December 29, 2016, all horses in C Barn at the Los Angeles Equestrian Center will be released from quarantine in place since November 3, 2016, for an outbreak of equine herpesvirus myeloencephalopathy (EHM).  The isolation barns will continue under quarantine as additional EHV-1 testing will occur on the two horses remaining in isolation.   Enhanced biosecurity measures continue for quarantined horses and horses’ temperatures continue to be monitored twice daily. The last febrile case occurred on December 12, 2016.   For additional information go to: https://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html
December 27, 2016
Equine Herpes Viruses
Fair Grounds Racetrack, New Orleans, LA
Confirmed case(s): Official Quarantine
On Dec 26, 2016 the State Veterinarian’s Office confirmed a positive PCR tests of nasal swabs and blood for the EHV-1 neurotropic strain in a 2-year old Thoroughbred gelding at the New Orleans Fairgrounds Race Track. The horse had been at the Fairgrounds since Dec 4, 2016 and broke with a fever on Dec 20th with no neurological signs. The horse responded to symptomatic treatment until Dec 25th when it developed neurological signs, was subsequently euthanized on the 26th and taken to the LSU school of veterinary medicine for necropsy. The horse was confined to its stall in Barn #14 since Dec 20th and had no direct contact with any other horses, but Barn 14, which houses 46 other horses, is currently under quarantine by the LA State Veterinarian’s Office. Horses will be monitored and have temperatures twice daily with increased biosecurity on the premises. An investigation with the State Racing Commission is currently under way.  
December 27, 2016
Equine Herpes Viruses
Fair Grounds, New Orleans, LA
Confirmed case(s): Official Quarantine
A diagnosis of equine herpesrvirus myeloencephalopathy (EHM) in one horse at the Fair Grounds racetrack in New Orleans, Louisiana has been confirmed by the attending veterinarian. The horse had a fever last week, became neurologic on December 25, 2016 and was euthanized. Laboratory test results on December 26th from the LSU diagnostic laboratory were positive for EHV-1, which can cause neurologic disease. The barn where the horse was stabled has been quarantined. Equine herpesvirus myeloencephalopathy is a reportable disease in Louisiana and is monitored by the State Veterinarian’s Office. More details and official information from the State Veterinarian’s Office will be provided as they become available. For more information on EHM go to: http://equinediseasecc.org/diseases.aspx
December 23, 2016
Strangles
Escambia County, FL
Confirmed case(s): Official Quarantine
On December 23, one premise in Escambia County, Florida was placed under quarantine for strangles. Per the owner, the horse was imported from the Bastrop kill pen facility in Louisiana on December 20. No animals have left the facility since clinical signs began. This is the first case in Escambia County and the 24th case for Florida in 2016.
December 21, 2016
Equine Herpes Viruses
Inyo County, CA
Outbreak Update
No new cases. CDFA continues to monitor the situation. On December 3, 2016, a 20 year-old Quarter Horse gelding displaying mild neurologic signs and located on a high desert ranch in Inyo County was confirmed positive for the neuropathogenic strain of Equine Herpesvirus-1. The gelding is part of a winter pack string of twenty-eight (28) horses and four (4) mules. On December 3, 2016, the premises was quarantined with enhanced biosecurity requirements. One additional equine herpesvirus myeloencephalopathy (EHM) and one EHV-1 febrile case was confirmed on the premises. The horses and mules were isolated in individual pens which limit disease spread. All confirmed positive horses continue to show improvement and are recovering.