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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.


August 06, 2018
Potomac Horse Fever
Frederick County, MD
Confirmed Case(s): No Quarantine
Source: The Maryland Department of Agriculture

On Thursday August 2nd, 2018 The Maryland Department of Agriculture received confirmation of a case of Potomac Horse Fever (PHF) from the University of Kentucky’s Equine Diagnostic Laboratory. The confirmation came from a pony gelding stabled in Frederick County which began showing clinical signs on July 26th, 2018 and did not respond to treatment. The pony died on July 30th, 2018 and a necropsy was performed at the Frederick Animal Health Laboratory on July 31st, 2018.

August 02, 2018
Strangles
Montcalm, Shiawassee, Wayen Counties, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department fo Agriculture and Rural Development

The Michigan Department of Agriculture and Rural Development has confirmed outbreaks of Strangles in three counties in July, 2018. An unvaccinated, 10-year-old Quarter Horse mare in Montcalm County developed a fever and inappetence while attending a fair. She was isolated and placed under veterinary care. The horse developed nasal discharge and draining submandibular lymph nodes (glands) after the fair. A 13-year-old Quarter Horse gelding in Shiawassee County developed a sudden onset of nasal discharge and is currently isolated and recovering. The horse was not vaccinated and had prior contact with a horse confirmed to have strangles. Two adult Arabian geldings from the same farm in Wayne County presented with nasal discharge. One horse had a history of having intermittent nasal discharge for a month prior to the second horse. The horses are recovering. One of the horses was currently vaccinated against strangles. Another horse at the farm was previously confirmed to have strangles in February of 2018. No quarantines were issued associated with any of these cases. This brings the current number of confirmed strangles cases in Michigan for 2018 to 12.

August 02, 2018
Corona Virus
Big E Fairgrounds, MA
Information Only
Source: Massachusetts Department of Agricultural Resources

The Massachusetts Department of Agricultural Resources has been advised that several horses that were on the premises of the Big E fairgrounds in West Springfield, MA as far back as July 22 have been confirmed to have Equine Coronavirus. One infected horse has been euthanized. In addition, a horse that was stabled at home with an affected horse, but was not actually at the fairgrounds, also has a confirmed ECV diagnosis. The horses originated from different states and barns, and were seen by more than one veterinary referral hospital. The barns at the Big E fairgrounds have been emptied, cleaned and disinfected.

August 02, 2018
Equine Herpes Viruses
Farmington, NY
Information Only
Source: New York State Department of Agriculture and Markets

The New York State Department of Agriculture and Markets is aware of an unsubstantiated report of EHV-1 in Farmington, NY. There is no evidence of an EHV-1 incident anywhere in New York State at this time nor is any equine facility in the state under quarantine or investigation for EHV-1. The Department of Agriculture and Markets is working to contact the source of the unsubstantiated report to see if there is any truth to it.

 

August 02, 2018
West Nile Virus
Pine County, MN
Confirmed Case(s): No Quarantine
Source: Minnesota Board of Animal Health

The Minnesota Board of Animal Health confirmed the first of equine West Nile Virus for 2018 on July 27th, 2018 in a 3-year-old Miniature Horse in Pine City, Minnesota. The stallion presented with acute neurologic signs, exhibiting profound weakness in his front limbs, tripping and falling and requiring assistance to stand. The horse has no documented history of vaccination against West Nile Virus and is currently receiving supportive care. A mare and a foal also live on the property and are healthy at this time. For more information go to https://www.bah.state.mn.us/news_release/sick-horse-in-pine-city-is-confirmed-to-have-west-nile-virus/

August 01, 2018
West Nile Virus
Barron County, WI
Confirmed Case(s): No Quarantine
Source: Wisconsin Department of Agriculture, Trade, and Consumer Protection

The Wisconsin Department of Agriculture, Trade, and Consumer Protection has received its first reported case of Equine West Nile Virus for 2018. The 3-year-old, unvaccinated Standardbred mare, located in Barron County, was first seen on July 20th, 2018. She was down and euthanized when she did not improve with treatment.

July 30, 2018
Eastern Equine Encephalitis
Duplin County, NC
Confirmed Case(s): No Quarantine
Source: North Carolina Department of Agriculture

The North Carolina Department of Agriculture has confirmed Eastern Equine Encephalitis in a 1-year-old, unvaccinated female donkey located in Duplin County. North Carolina. This is the fourth case of EEE in 2018.

July 30, 2018
Strangles
Finger Lakes Racetrack, Ontario County, NY
Quarantine Released
Source: New York Department of Agriculture and Markets

The New York Department of Agriculture and Markets released the quarantine for Strangles at Barn 19 at Finger Lakes Race Track and the associated equine facility in Ontario County, NY. The index case continues to heal from his lesions and remains isolated alone in a paddock in Ontario County. He will remain isolated away from other horses under veterinary care until it is determined that he is no longer shedding S.equi. No other cases of strangles were detected in any of the exposed, quarantined horses during the quarantine period.  

July 29, 2018
Potomac Horse Fever
Albemarle County, VA
Confirmed Case(s): No Quarantine
Source: Attending Veterinarian

An attending veterinarian has confirmed four cases of Potomac Horse Fever at an equine clinic in Albemarle, VA. The cases include Quarter Horses and Miniature Horses ranging in ages from 10-14 and we confirmed on fecal and blood PCR. Onset of clinical signs was reported July 23rd, 2018 and include fever, lethargy, diarrhea, and inappetance. One horse was euthanized, the remaining three cases are receiving treatment. The horses are reported as having been vaccinated.

July 27, 2018
West Nile Virus
Owyhee County, ID
Confirmed Case(s): No Quarantine
Source: Idaho Department of Agriculture

The Idaho Department of Agriculture has confirmed a case of West Nile Virus in a 2 year old Quarter Horse mare located at a private facility in Owyhee County. The horse showed an onset of clinical signs on July 19th, 2018 including ataxia and incoordination. Testing was confirmed positive for WNV at the ISDA Animal Health Laboratory. The horse had been vaccinated as a filly but had not received a booster vaccination. The horse is improving with supportive care.