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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.


February 21, 2018
Equine Herpes Viruses
Los Alamitos Race Course, CA
Confirmed case(s): Official Quarantine
Source: California Department of Food and Agriculture

California Department of Food and Agriculture (CDFA) confirmed Equine Herpesvirus Myeloencephalopathy (wild-type strain) in a 10 year old horse ( lead pony) displaying neurologic signs at Los Alamitos Race Course. The horse was euthanized. A quarantine has been issued for exposed horses. All exposed horses will be monitored for clinical signs and temperatures will be taken twice daily. CDFA and California Horse Racing Board staff are onsite ensuring biosecurity measures are implemented and will continue to monitor the situation.

February 18, 2018
Equine Herpes Viruses
The Thoroughbred Center, Lexington, KY
Confirmed case(s): Official Quarantine
Source: Kentucky Department of Agriculture

On Friday, February 16, 2018 the Kentucky Department of Agriculture quarantined Barn 30 (in addition to Barn 3 that was quarantined earlier this week, and Barn 7 that is being used to house positive horses) at the Thoroughbred Center in Lexington following a horse in that barn being confirmed positive for EHV-1 ‘wild type’.  The 3-year old Thoroughbred filly tested PCR positive on both nasal swab and blood. The patient, after presenting with a fever, was moved from the barn into isolation and precautionary measures implemented on Thursday evening.  With the confirmation of EHV1 on Friday Barn 30 was quarantined, perimeter fencing to control movement in and around the barn area erected, guarded security placed on the barn and biosecurity procedures implemented at ALERT status. 

February 18, 2018
Equine Herpes Viruses
Belmont Park, Elmont, NY
Confirmed case(s): Official Quarantine
Source: New York State Department of Agriculture and Markets

The New York State Department of Agriculture  and Markets confirmed the 4 yr old TB filly displaying neurologic signs on February 15, 2018 tested positive for EHV-1 “A” strain by PCR. This filly was euthanized on February16, 2018. Exposed horses in Barn 10 at Belmont Park continue to be quarantined and monitored. An epidemiological investigation has been initiated. State animal health officials and racing officials continue to monitor the situation. 

February 17, 2018
Equine Herpes Viruses
Chester County, PA
Confirmed case(s): Official Quarantine
Source: Pennsylvania Department of Agriculture, Bureau of Animal Health

On February 16, 2018, the Pennsylvania Veterinary Laboratory in Harrisburg, PA confirmed Equine Herpesvirus Myeloencephalopathy in a horse with hind limb ataxia tested positive for EHV-1 (A strain).  As of 2/17/18, the horse remains stable. The premises, a pleasure horse barn in Chester County, Pennsylvania, has been quarantined by the Pennsylvania Department of Agriculture, Bureau of Animal Health.  All horses are being monitored for clinical signs of EHV-1 infection and biosecurity precautions have been implemented to prevent the spread of the virus off of the premises.

February 16, 2018
Equine Herpes Viruses
Belmont Park, Elmont, NY
Suspected Case(s): Official Quarantine
Source: New York Department of Agriculture

The New York State Department of Agriculture and Markets reports  a presumptive case of Equine Herpesvirus Myeloencephalopathy (EHM) at Belmont Park.  On 2/15/2018 a four year old TB filly developed clinical signs including fever, urinary incontinence, and recumbency.  Due to poor prognosis, the horse was euthanized on 2/16/2018.  Barn 10 at the Belmont Racetrack has been placed under a precautionary quarantine.  The 21 horses in Barn 10 are being monitored for signs of illness.

February 14, 2018
Equine Herpes Viruses
The Thoroughbred Center, KY
Confirmed case(s): Official Quarantine
Source: Kentucky Office of State Veterinarian

The Kentucky Office of State Veterinarian has confirmed a diagnosis of Equine Herpesvirus Type 1 to be affecting horses housed in barn 3 at The Thoroughbred Center in Lexington. The index case was reported on 2/13/2018 after a horse that had presented with fever of unknown origin was sampled and results of PCR testing identified the horse to be positive for EHV1 ‘wild type’ on both nasal wash and whole blood. The barn was immediately secured with no horses being allowed to move into or out of the barn and biosecurity protocols were put in place. The affected barn’s population is currently comprised of eighteen (18) horses including the index case. Two horses that moved out of the barn prior to the discovery are currently in isolation on a private farm and a barn at The Thoroughbred Center has been emptied and dedicated to serve as the quarantine barn used to isolate the positive horses. Samples collected from the exposed horses earlier today have been partially reported, and has identified six (6) additional positive cases. Five (5) horses were positive on nasal swab only and one was positive on both blood and nasal swab.  In addition to the horses exposed in the barn, the outriders have been sampled and they, too, were reported negative.

February 14, 2018
Equine Herpes Viruses
Campbell County, WY
Information Only
Source: Office of the Wyoming State Veterinarian

A correction has been made regarding the previous outbreak update on the the equine herpesvirus outbreak in Campbell County: the fourth positive horse originated from the second quarantines premise, not the first quarantined premis. Additionally, today (2/14/2018) Wyoming State Veterinarian confirmed a fifth horse with a fever at the Wright Agriculture Complex (the “third” premises) has tested negative on both nasal swab and whole blood for EHV-1 wild type.  This premise is an event facility with long term boarding.  The premises has been under quarantine since 2/7/2018 and all equine events have been canceled until further notice. Prior to the quarantine being placed, four horses were removed from the Wright Ag Complex facility and brought to a private ranch where 13 other horses were already located.  That premises and all 14 horses are under quarantine as well.

February 14, 2018
Equine Herpes Viruses
Turfway Park, KY
Information Only
Source: Kentucky Department of Agricultue

According to the Kentucky Department of Agriculture there have been no fevers or any other evidence of illness reported in the quarantine barn at Turfway Park Racetrack. Observations during monitoring found horses to be bright, alert, eating and with no evidence of illness. The plan is to collect samples (nasal swabs and whole blood) from each of the horses in the quarantine barn next week to see if the quarantine can be released.

February 13, 2018
Equine Herpes Viruses
Bannock County, ID
Confirmed case(s): Official Quarantine
Source: Idaho State Department of Agriculture

The Idaho State Department of Agriculture has confirmed a case of equine herpesvirus myeloencephalopathy in Bannock County. Three Quarter Horse mares showed an onset of clinical symptoms including fever, ataxia, and  neurological symptoms. All 3 affected mares were confirmed positive for the neuropathogenic strain of EHV-1. Two of the affected mares were euthanized. The premises is under quarantine and strict biosecurity is being followed. The epidemiological investigation is ongoing. This is the 4th premises to be quarantined in Idaho due to EHV-1 in 2018.

February 13, 2018
Strangles
Wayne County, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department of Agriculture and Rural Development

The Michigan Department of Agriculture and Rural Development has confirmed a case of strangles in an eight-year-old Quarter Horse mare from Wayne County. The horse is recovering and no quarantines were placed.  As of January 26, 2018, strangles was added to Michigan’s reportable disease list, which can be found on www.michigan.gov/dvmresources. This is the first reported case of strangles in Michigan in 2018.