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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
September 21, 2017 Eastern Equine Encephalitis Lowndes County, GA Confirmed Case(s): No Quarantine
Source: Georgia Department of Agriculture

The Georgia Department of Agriculture has confirmed a second EEE case in Lowndes County (3 year, Paint horse, unknown vaccine status).  The horse was febrile with acute onset neurological signs including seizures, blindness, and inability to rise. The horse was euthanized due to poor prognosis. The 2017 total reported EEE cases in GA to date are 5 confirmed, 1 suspect.

September 20, 2017 West Nile Virus Ashtabula, Holmes, Tuscawaras and Wayne counties,, OH Confirmed Case(s): No Quarantine
Source: Ohio Department of Agriculture’s Animal Disease Diagnostic Laboratory

Five horses in northeast Ohio have been confirmed positive for West Nile virus (WNV) between August 23 and September 5, 2017, based on clinical signs and serologic testing at the National Veterinary Services Laboratories in Ames, Iowa. A 12-year-old gelding from Wayne County presented on August 23rd with fever (102-103 F), ataxia, head wobbling, lethargy, weakness, and was unsteady in the rear limbs. As of Sept. 12, the attending veterinarian reported the horse was "alive and showing improvement, and was responding to supportive treatment. An approximately 10-year-old, also from Wayne County, the gelding was euthanized on August 26th after having been treated for 3 days. The horse was down, unable to rise, and had quit eating. An 8-year-old gelding from Holmes County presented on August 25th with fever (102.5 F), weakness, and refused to eat or drink; the horse died despite treatment on September 4th. An 8-year-old mare from Tuscawaras County showed onset of muscle fasciculations and hypersensitivity to stimuli on September 5th as well as stiffness in all four legs. The horse responded to established treatment protocol and was estimated to be 85-90% recovered as of September 13th. A 5-year-old gelding from Ashtabula County presented on August 30th with rapidly progressing signs of weakness, stiff neck, very sensitive to neck palpations, inability to move the front limbs and weakness, falling over when bending down to eat. Extensive supportive care was administered and the horse was reported still alive as of September 13th. None of the affected horses had been vaccinated for WNV.

September 20, 2017 West Nile Virus Kittitas County, WA Confirmed Case(s): No Quarantine
Source: Washington State Department of Agriculture (WSDA)

The Washington State Department of Agriculture (WSDA) reports that West Nile virus (WNV) has been confirmed in a horse in Kittitas County. The confirmed case is a fifteen year old quarter horse gelding which is currently undergoing treatment. The Washington State Department of Health (DOH) confirmed the horse did not travel outside of Washington State and was not vaccinated for West Nile virus.

September 20, 2017 West Nile Virus Waukesha and Green Lake Counties, WI Confirmed Case(s): No Quarantine
Source: Wisconsin Department of Agriculture, Trade, and Consumer Protection

The Wisconsin Department of Agriculture, Trade and Consumer Protection confirmed three new cases of West Nile Virus. Two horses both unvaccinated 2-year-old Friesians are from Waukesha County; one is a mare, one is a stallion and both began exhibiting clinical signs on 9/8/17 and were sampled on 9/13/17.  Clinical signs included difficulty backing, hypermetria, paresis, proprioceptive deficits, hyperesthesia, and reluctance to flex neck.  Both are improving and stable with treatment, but one is still neurologic. The third horse is an unvaccinated 3-year-old Standardbred mare from Green Lake County.  The mare seemed off and lethargic starting on about 9/1/17 and appeared to improve. A veterinarian was called when signs worsened and samples were taken on 9/11/17.  The veterinarian reports that the mare is slowly improving after showing neurologic signs (circling, hypermetria, muscle fasciculations, ataxia).  These are confirmed equine WNV cases #17, 18, and 19 for 2017 in Wisconsin

September 19, 2017 West Nile Virus Vernon 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 confirmed West Nile Virus in an unvaccinated 14-year-old Standardbred cross from Vernon County.  The hose was examined on 8/21/17 and found with a low-grade fever, slightly uncoordinated, lethargic and had twitching around the muzzle with chewing motions though it was not eating at the time.  The horse was treated and is recovering.  No quarantine was issued.

September 18, 2017 Equine Infectious Anemia Rosedale Municipality, MB Confirmed case(s): Quarantine
Source: Canadian Food Inspection Agency

On Sept 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 the rural municipality of Rosedale, Manitoba (MB). This animal had been sampled by an accredited veterinarian to comply with an event pre-entry requirement; clinical signs of the disease were not reported. 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 confirmed positive cases.

September 18, 2017 West Nile Virus Russell County, KY Confirmed Case(s): No Quarantine
Source: Kentucky Department of Agriculture

The Kentucky Department of Agriculture confirmed West Nile Virus in an 8-year old Quarter Horse gelding. On 9/12/17 the horse was down, unable to rise and was euthanized. 

September 18, 2017 West Nile Virus Bruce County, Waterloo County, Renfrew County, District of Muskoka and the Regional Municipality, ON Confirmed Case(s): No Quarantine
Source: Ontario Ministry of Agriculture, Food and Rural Affairs

Since September 15th, 5 cases of West Nile Virus in Bruce County, Waterloo County, Renfrew County, District of Muskoka and the Regional Municipality were reported to the Ontario Ministry of Agriculture, Food and Rural Affairs. The horses included 2 gelding and 3 mares with ages ranging from 4 to 20 years.  Clinical signs ranged from hind end weakness and lethargy to recumbency and severe hyperesthesia. Two of the horses were euthanized and three are recovering under veterinary supervision. Four horses were unvaccinated and one had an unknown vaccination history. The total number of cases reported in Ontario this year is 12.

 

September 18, 2017 Equine Infectious Anemia Bryan County, OK Confirmed Case(s): No Quarantine
Source: Oklahoma Department of Agriculture

The Oklahoma Department of Agriculture (ODAFF) has confirmed the second EIA positive horse for 2017 in Oklahoma. The 6 year old registered QH gelding located in Bryan County was euthanized and the facility placed in quarantine. This horse was discovered as part of a disease investigation involving an EIA positive race horse in Louisiana. The two EIA positive horses recently raced at Delta Downs. Past EIA test history for this horse is unknown. For more information about EIA go to: https://www.aphis.usda.gov/vs/nahss/equine/eia/eia_info_sheet.pdf

September 17, 2017 West Nile Virus Elko County, NV Confirmed Case(s): No Quarantine
Source: Nevada Department of Agriculture

The Nevada Department of Agriculture confirmed West Nile Virus in a 5-year old gelding showing ataxia, hind limb paresis and lip droop. The horse was not vaccinated and is continuing to eat and drink although clinical signs remain severe. The horse is located in north east Elko County between Wells and the Idaho border.