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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.


October 03, 2018
West Nile Virus
Fayette County, KY
Confirmed Case(s): No Quarantine
Source: Office of the Kentucky State Veterinarian

The Office of the Kentucky State Veterinarian has confirmed a case of equine West Nile virus. A 3-year-old Thoroughbred filly in Fayette County presented with acute progressing ataxia on September 28th, 2018. The horse could rise and stand with assistance but was not drinking, was hypersensitive to touch, and had muscle fasciculation on muzzle and tricep areas. As of October 2nd, the horse is reported to be much improved with a favorable prognosis. The horse had no WNV vaccination history reported in 2018 but had been vaccinated in 2016 and 2017. For more information go to www.kyagr.com/statevet/west-nile-info.html

October 02, 2018
West Nile Virus
Polk County, IA
Confirmed Case(s): No Quarantine
Source: Iowa State Veterinarian’s Office

The Iowa State Veterinarian’s Office has confirmed 2 cases of equine West Nile virus. A 2-year old Quarter Horse mare & 4-year old Quarter Horse mare in Polk County first developed ataxia on September 24th. The horses are being treated symptomatically. Neither horse was vaccinated.

 

October 02, 2018
Equine Infectious Anemia
Weld County, CO
Outbreak Update
Source: Colorado Department of Agriculture

The Colorado State Veterinarians office has updated information on the second case of Equine Infectious Anemia (EIA) discovered in September 2018. This second case was confirmed on September 1st, at the National Veterinary Services Laboratory. The horse was in strict isolation during testing and was euthanized once the disease was confirmed. The small number of horses exposed to the EIA positive horse have been located and are quarantined or under Hold Orders with movement restrictions. This second case is unrelated to the initial EIA case detected in Colorado in August. These are two separate EIA incidents with no common movement, locations or horse use between the two cases.

October 01, 2018
West Nile Virus
Stephens County, OK
Confirmed Case(s): No Quarantine
Source: Oklahoma Department of Agriculture, Food, and Forestry

The Oklahoma Department of Agriculture, Food, and Forestry has reported the fourth equine West Nile virus case  for 2018 in Oklahoma. The 1 year old QH female located in Stephens County was showing severe neurologic signs and was not vaccinated.  A quarantine was not issued.  For more information visit:http://www.ag.ok.go

September 28, 2018
West Nile Virus
Bingham County, ID
Confirmed Case(s): No Quarantine
Source: Idaho Department of Agriculture

The Idaho Department of Agriculture confirmed West Nile Virus (WNV) in Bingham County. in On September 25, 2018 an an 11-year old Quarter Horse mare had neurologic signs including nose twitching, agitation, depression and hind limb weakness. The vaccination status is unknown, and there is no quarantine. This is Idaho’s 5thWNV case in 2018.

September 28, 2018
Equine Infectious Anemia
Weld County, CO
Confirmed case(s): Official Quarantine
Source: Colorado Department of Agriculture

On September 28, 2018 the Colorado Department of Agriculture confirmed a second case of Equine Infectious Anemia (EIA) in Weld County. The 7-year old Quarter Horse mare had weight loss and anemia. Seventeen horses including the affected horse on the private facility are under quarantine. The horses under quarantine will be observed, tested and then retested in 60 days. This case is unrelated to the previous confirmed case in Weld County. For more information go to: https://www.colorado.gov/pacific/agmain/news/9282018-second-eia-positive-horse-identified-colorado

September 28, 2018
West Nile Virus
Chautauqa, Genesee, Orleans Counties, NY
Confirmed Case(s): No Quarantine
Source: New York State Department of Agriculture and Markets

The New York State Department of Agriculture and Markets confirms New York's 10th, 11th, 12th West Nile Virus (WNV) cases.

On September 18, 2018 a 17-year old mare from Mayville, NY (Chautauqua Co) was unsteady on her feet which progressed over a few days’ time. The mare was unvaccinated and was euthanized on September 20th. On September 19th a 25-year old, unvaccinated gelding from Leroy NY (Genesee County) had a high fever. The next day, ataxia, tremors and inappetance developed. Veterinary treatment was initiated and this horse is alive as of September 28th.  On September 21st an unvaccinated 16-year old gelding from Albion, NY (Orleans Co) had behavior changes, incoordination and inappetance. The veterinarian  initiated treatment and as of September 28th this gelding is recovering quite well. In all three cases, blood tests confirmed active WNV infection.

September 28, 2018
West Nile Virus
Langenburg, Corman Park, Briannia, Arlington, Maple Creek Municipalities, SK
Confirmed Case(s): No Quarantine
Source: Canadian Animal Health Surveillance System

The Canadian Animal Health Surveillance System has reported 6 cases of equine West Nile Virus (WNV) in Saskatchewan. A yearling Quarter Horse gelding in the Regional Municipality of Langenburg was examined on August 21st, 2018. The horse had been vaccinated with Eastern/Western/Tetanus and WNV two weeks prior to onset. The horse was treated with Banamine and IV fluids and is recovering.  A 6-year-old Thoroughbred mare in the Regional Municipality with no vaccination history was examined on September 9th and was euthanized. A 5-year-old Quarter Horse cross mare in the Regional Municipality of Corman Park that hadn’t been vaccinated for two years was examined on September 7th and treated with Dexamethasone. The outcome was unspecified. A 9-year-old Quarter Horse mare with no vaccination history in the Regional Municipality of Britannia was examine on September 9th and treated with IV fluids and DMSO. The horse is recovering. A 2-year-old Quarter Horse gelding with no vaccination history in the Regional Municipality of Arlington was examined on September 15th and treated with Dexamethasone and DMSO is recovering. A 7-year-old Quarter Horse mare with no vaccination history in the Regional Municipality of Maple Creek was examined on September 18th and treated with Non-steroidal anti-inflammatories is recovering. For more information go to: https://www.cahss.ca/surveillance/equine/

September 28, 2018
West Nile Virus
Tuscarawas, Wayne, Holmes Counties, OH
Confirmed Case(s): No Quarantine
Source: Ohio Department of Agriculture

The Ohio State Department of Agriculture confirmed 7 new cases of West Nile Virus (WNV) in September 2018. On September 18th12-year-old Standardbred gelding from Tuscarawas County had weak posterior limbs. The veterinarian described the symptoms as mild. The horse was not vaccinated against WNV. The horse is alive and recovering as of September 25th. On September 18tha 7-year-old Pony mare from Tuscarawas County wouldn’t move and had weak front limbs. Facial paralysis, a low-grade fever, malaise, lack of appetite, and mild ataxia were found during the veterinarian’s examination. The horse was not vaccinated against WNV. The horse is alive and recovering as of September 25th. On September 18tha 3-year-old Standardbred gelding from Wayne County was uncoordinated and had a low-grade fever. The horse was not vaccinated against WNV. The horse is alive and recovering as of September 26th. On September 19tha 7-year-old Standardbred gelding from Tuscarawas County was lame, stiff and had weak hind limbs. The unvaccinated horse is alive and responding to veterinary treatment recovering as of September 26th.On September 19than adult Belgian mare from Holmes County was off balance and had weak rear legs. On September 20th the horse was down and unable to rise. In spite of treatment, the owner opted to euthanize the horse on September 20th. The horse was not vaccinated against WNV. On September 19than adult Standardbred gelding from Wayne County had an unsteady gait. The horse was treated by a veterinarian, is alive and is recovering as of September 26th. The thirty-eighth positive horse was a 2-year-old Morgan mare from Holmes County. The horse was not vaccinated against WNV.  As of September 28ththe clinical outcome is not known. Serum samples collected and submitted to NVSL (seven cases) and Cornell University (one case), were all reported positive for WNV exposure by IgM capture ELISA titer of 1:400. As of September 27, Ohio has had 38 confirmed cases of WNV.

September 28, 2018
West Nile Virus
Muskegon County, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department of Agriculture and Rural Development

The Michigan Department of Agriculture and Rural Development confirmed a second case of West Nile virus (WNV) for 2018. An unvaccinated 15-year-old Standardbred mare from Muskegon County, began to experience severe incoordination in the hindlimb on September 13, 2018. The horse was euthanized. No quarantines were issued.