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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.


November 02, 2018
Equine Infectious Anemia
Lamar County, GA
Outbreak Update
Source: Georgia Department of Agriculture

The Georgia Department of Agriculture has updated information on the cases of Equine Infectious Anemia (EIA) discovered in Lamar County, August 2018. The Department has released the quarantine on one premise after follow up testing revealed no additional cases. A second premise remains under quarantine pending results from follow up testing.

November 02, 2018
West Nile Virus
Brooks, Franklin, and Hart Counties, GA
Confirmed Case(s): No Quarantine
Source: Georgia Department of Agriculture

The Georgia Department of Agriculture has confirmed WNV cases in the following counties: Brooks, Franklin, and Hart. The 2018 total reported WNV cases in GA to date are 3 confirmed.

November 01, 2018
West Nile Virus
Clarke County, VA
Confirmed Case(s): No Quarantine
Source: Virginia Department of Agriculture and Consumer Services

The Virginia Department of Agriculture and Consumer Services (VDACS) has confirmed a case of equine West Nile virus in Clarke County. A vaccinated, 8-year-old Holsteiner stallion developed mild ataxia, prominent skin twitching and moderate behavioral anxiety on 10/13/18. Serum from the horse was positive on the IgM Capture ELISA performed at the Animal Health Diagnostic Center at Cornell University. The affected horse has fully recovered.

October 31, 2018
West Nile Virus
Logan County, OK
Confirmed Case(s): No Quarantine
Source: Oklahoma Department of Agriculture, Food, and Forestry

The Oklahoma Department of Agriculture, Food, and Forestry has confirmed a case of equine West Nile virus in Logan County. An unvaccinated 2-year-old Quarter horse filly was showing severe neurologic signs but it improving with treatment. A quarantine was not issued. For more information visit http://www.ag.ok.gov

October 31, 2018
West Nile Virus
Bryan, Garvin, Payne, Osage, Grady Counties, OK
Confirmed Case(s): No Quarantine
Source: Oklahoma Department of Agriculture, Food, and Forestry

The Oklahoma Department of Agriculture, Food, and Forestry has reported five confirmed cases of equine West Nile virus. A three-year-old quarter horse filly located in Bryan County was showing severe neurologic signs and was euthanized. The vaccination history is unknown. A yearling Quarter Horse stallion located in Garvin County was showing moderate neurologic signs and was unvaccinated. A 12-year-old Warmblood gelding located in Payne County was showing severe neurologic signs and was euthanized. The horse was current on vaccinations. A 2-year-old Quarter Horse gelding located in Osage County was showing severe neurologic signs and died within 24 hours. The vaccination history is unknown. A 3-year-old Clydesdale/Hackney female located in Grady County was showing mild neurologic signs. The horse was currently vaccinated for WNV. No quarantines were issued. This brings the number of confirmed cases of equine West Nile virus in OK in 2018 to 10.

October 30, 2018
West Nile Virus
Rockcastle and Hardin Counties, KY
Confirmed Case(s): No Quarantine
Source: Kentucky Department of Agriculture

The Office of the Kentucky State Veterinarian has confirmed two cases of West Nile Virus (WNV). On October 24th, a 5-year old Tennessee walking horse mare in Rockcastle, County had neurologic spasticity wit muscle contractions. The condition worsened and the mare was euthanized. There was no history of WVN vaccination. On October 25, 2018 a 12-year old Tennessee Walking Horse mare in Hardin County had acute ataxia and muscle fasciculation. The mare is alive, continues to improve and is expected to recover. One dose of WNV vaccine was administered in January 2018. 

October 30, 2018
Strangles
Pierce County, WA
Confirmed Case(s): Voluntary Quarantine
Source: Washington State Department of Agriculture

The Washington State Department of Agriculture confirmed Strangles in a 17-year old Arabian gelding in Pierce, Washington. The horse had nasal discharge, a fever and had a positive culture. A second horse was exposed and both are in voluntary quarantine. The vaccination history is unknown.

 

October 29, 2018
West Nile Virus
Cuyahoga, Licking, Carroll, and Holmes Counties, OH
Confirmed Case(s): No Quarantine
Source: Office of the Ohio State Veterinarian

The Office of the Ohio State Veterinarian has reported five confirmed cases of equine West Nile virus. A 4-year-old Thoroughbred gelding from Cuyahoga County showed an onset of clinical signs on October 7th, 2018 when the trainer went to retrieve the horse from its stall and noticed it was lame on its right side. The track veterinarian responded and noticed that it was non-weightbearing with a fever of 102.4. The veterinarian suspected a high fracture, but the radiograph was negative. Symptoms progressed to a head tilt, muscle fasciculations in the neck and shoulders and then then horse went down. The horse was humanely euthanized and brought to the Ohio Department of Agriculture for a necropsy. After determining that brain tissue was negative for rabies, PCR assay at the Ohio ADDL detected West Nile Virus (WNV) nucleic acid in brain stem tissue of this horse. A 7-year-old Quarter Horse gelding from Licking County had an onset of clinical signs on 10/04/2018 when the owner noticed that the horse was dragging his left leg, lethargic, and had weakness in the rear legs. The days prior the horse had a lack of appetite. The veterinarian responded and found the horse down and treated the horse. A serum sample was collected and submitted to NVSL, they reported an IgM capture ELISA titer of 1:400 or greater, suggesting recent exposure to West Nile Virus. The horse is alive and recovering as of 10/06/2018. A 10-year-old Paint gelding from Holmes County showed onset on 10/17/2018 when the attending veterinarian received a call for a down horse. Upon arrival the horse was laterally recumbent, couldn't rise and had a temperature of 100.8°F. A serum sample was collected and submitted to NVSL, they reported an IgM capture ELISA titer of 1:400 or greater, suggesting recent exposure to West Nile Virus. The horse died spontaneously that night. A 7-year-old Percheron mare from Holmes County showed an onset of clinical signs on 9/11/2018. The veterinarian received a call for a down horse that was agitated; the veterinarian treated the horse, but it died spontaneously that night. A serum sample was collected and submitted to IDEXX, they reported a positive IgM capture ELISA, suggesting recent exposure to West Nile Virus. A 16-year-old Paint gelding from Carroll County showed an onset of clinical signs when the owner found the horse down in the pasture in the afternoon on 10/19/2018, it struggled to rise. The veterinarian responded, and the horse was down with a fever of 100°F, HR 65, RR36 (irregular), full body muscle fasciculations, and had hyperesthesia. The veterinarian treated and collected a serum sample. The veterinarian was called back out the next day because the horse was down. A serum sample was collected and submitted to Cornell, which reported an IgM capture ELISA of 6.79 (>3.3 = Positive), suggesting recent exposure to West Nile Virus. The horse was euthanized on 10/20/18. None of the horses were vaccinated against WNV. This brings the total number of confirmed equine WNV cases in Ohio to 48.

 

October 29, 2018
West Nile Virus
Kent County, DE
Confirmed Case(s): No Quarantine
Source: Office of the Delaware State Veterinarian

The Office of the Delaware State Veterinarian has reported a confirmed case of equine West Nile virus. An unvaccinated yearling Standardbred filly in Kent County showed an onset of clinical signs on October 11th, 2018 including ataxia in all four limbs, buckling in the forelimbs progressing to recumbency, muscle fasciculations and somnolence. The horse was euthanized on 10/15/2018 following 60 hours of recumbency. Samples taken showed positive IgM capture ELISA, and positive PCR on necropsy.

 

October 26, 2018
West Nile Virus
Carlisle 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 Quarter Horse gelding on Carlisle County showed an onset of clinical signs on October 22nd, 2018 including lethargy and rear limb ataxia. On the evening of October 25th the horse was described as much improved with a favorable prognosis. WNV Vacc History is currently unknown. It is thought the horse might have received a single vaccination in the spring by another veterinarian. The attending veterinarian is checking to confirm if the patient was or wasn’t vaccinated.