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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.


Date Disease Location Status
December 26, 2017 Equine Herpes Viruses King County, WA Outbreak Update
Source: Washington State Department of Agriculture

On December 15, 2017 the Washington State Department of Agriculture EHV 1 a 13-year old Halflinger gelding at one facility in King County, WA.  37 of 60 horses have now been tested with 16 horses confirmed positive for the Equine Herpes 1 neurotropic strain.  Seven horses have been euthanized due to Equine Herpesvirus Myeloencepalopathy( EHM). Clinical signs of the EHM horses included 102-105 fevers, hind limb ataxia, no tail tone and dribbling urine. Treatment of horses include supportive care and anti-viral therapy.  The attending veterinarian is making morning and evening rounds at the barn and evaluating fevers and clinical signs.  The horse facility is still under quarantine and strict equine biosecurity in place.  At this time no other horse facilities are reporting new cases in the state of Washington. 

December 26, 2017 Equine Herpes Viruses Butler County, PA Quarantine Released
Source: Pennsylvania Department of Agriculture

On Tuesday December 26, 2017 the quarantine put in place in Butler County, Pennsylvania, which arose from an initial EHV-1 quarantine on November 15, 2017, has been revoked by the Pennsylvania Department of Agriculture. This was the index premises, a small dressage barn.  One other closely related private barn was also under quarantine, but that quarantine was released on December 6, 2017.  No additional cases beyond the index case, which has recovered, were identified during this quarantine.

December 21, 2017 Equine Infectious Anemia Newell County, AB Confirmed case(s): Quarantine
Source: Canadian Food Inspection Agency

On December 13, 2017 a positive Equine Infectious Anemia (EIA) result was confirmed by the Canadian Food Inspection Agency’s (CFIA) national reference laboratory for a horse on a premises in Newell County, Alberta. The animal had been sampled by an accredited veterinarian to comply with U.S. export conditions; no clinical signs of disease were noted at the time of sampling. A CFIA investigation is underway and as per program policy, a quarantine has been placed on the infected animal and its on-premises contacts. The quarantine will remain until all disease response activities have been completed, including follow-up testing and ordering the destruction of positive cases. Trace-out activities may require the CFIA to undertake actions at additional premises as outlined in the current program policy.

December 15, 2017 Equine Herpes Viruses King County, WA Confirmed case(s): Quarantine
Source: Washington State Department of Agriculture

Washington State Department of Agriculture confirmed an Equine Herpes Virus 1 neurotropic genome strain in a horse in King county.  The 13 year old Halflinger gelding has no neurological symptoms at this time. The facility is under quarantine and the remaining horses are having their temperatures taken twice daily and strict biosecurity practices are in place as well. 

 

 
December 12, 2017 Strangles Sonoma County, CA Confirmed case(s): Quarantine
Source: Attending Veterinarian

An attending veterinarian has reported a quarantine for Strangles was established at a private facility in Sonoma County, California on November 26th, 2017. An 11-year-old warmblood gelding presented with purulent nasal discharge, cough, and a fever and subsequent testing confirmed the horse was positive for Strangles. The horse is receiving treatment and is in isolation. The facility is on voluntary restriction of horse movement into or out of the barn until December 14th, 2017.

December 12, 2017 West Nile Virus Glenn County, CA Confirmed Case(s): No Quarantine
Source: California Department of Food and Agriculture

The California Department of Food and Agriculture confirmed the 21st case of Equine West Nile Virus in California for 2017. The two year old Quarter Horse gelding displaying ataxia in Glenn County, California is recovering. The vaccination status for this horse is unknown. For more information visit: https://www.cdfa.ca.gov/ahfss/Animal_Health/WNV_Info.html

December 11, 2017 Equine Herpes Viruses Bethany, CT Confirmed case(s): Quarantine
Source: Attending Veterinarian

An outbreak of Equine Herpesvirus Myeloencephalopathy was confirmed in Bethany, Connecticut. Clinical signs were seen on 12/5/2017 in a private facility. One horse was confirmed positive a Cornell University on 12/10/17. Currently a 4-year old Quarter Horse mare was confirmed positive and tests on a 20-year old, a 14-year old and a 26- year old Quarter Horse geldings are pending. Signs include 102-104 F fevers, mild in appetence and hindlimb ataxia with dribbling urine. All horses, which were vaccinated are alive and receiving treatment. Potentially 30-35 horses have been exposed and currently 20 horses are in quarantine established by the Connecticut Department of Agriculture. 

December 11, 2017 Equine Herpes Viruses Champaign County, IL Confirmed case(s): Quarantine
Source: University of Illinois Veterinary Diagnostic Laboratory

The University of Illinois Veterinary Diagnostic Laboratory confirmed two positive cases of equine herpesvirus myeloencephalopathy at a private facility in Champaign County. Out of 24 horses on the facility 5 presented with fever greater than 102 degrees and hind limb swelling. Two of those horses were confirmed positive for EHV-1. The index case, a 28-year-old Quarter Horse mare, became recumbent and was euthanized. One other horse was also euthanized for unrelated complications. The facility is currently under quarantine and checking temperatures twice daily.

December 08, 2017 Strangles Indian River County, FL Confirmed case(s): Quarantine
Source: Florida Department of Agriculture and Consumer Services

On December 6th, 2017 the Florida Department of Agriculture and Consumer Services confirmed one premise in Indian River County was placed under quarantine for clinical signs and positive PCR confirmation of Strangles. The index case became clinical on November 20th after residing at a training facility in Lee County. All other horses at both locations are free of clinical signs. This is the first case of reported Strangles in Indian River County and the 40th for the state of Florida.

December 08, 2017 Strangles Volusia County, FL Confirmed case(s): Quarantine
Source: Florida Department of Agriculture and Consumer Services

On December 5th, 2017 the Florida Department of Agriculture and Consumer Services confirmed one premise in Volusia County, Florida was placed under quarantine for clinical signs and positive PCR confirmation of Strangles. The index case became clinical on December 2nd. All other horses on the premise are free of clinical signs at this time. This is the first case of reported Strangles in Volusia County and the 39th for the state of Florida.