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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.


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. 

September 15, 2017
West Nile Virus
Jackson County, FL
Confirmed Case(s): No Quarantine
Source: Florida Department of Agriculture and Consumer Services

On 9/7/17, in Jackson County, the Florida Department of Agriculture and Consumer Services confirmed a horse with West Nile Virus. On 9/9/17 the same horse was confirmed positive for Eastern Equine Encephalitis (EEE). The vaccination history for this horse is unknown.  The horse became clinical on 8/30/17 and was euthanized on 8/31/2017.  This is the second WNV case for Florida and the fourth EEE case for Florida in 2017.

September 15, 2017
West Nile Virus
Bay County, FL
Confirmed Case(s): No Quarantine
Source: Florida Department of Agriculture and Consumer Services

On September 7th the Florida Department of Agriculture and Consumer Services confirmed a case of West Nile Virus in a 18 year old horse reportedly vaccinated by the owner approximately 10 months prior to the onset of clinical signs on 8/28/17. The horse was euthanized on 8/30/17. This was the first case of WNV for Florida in 2017.

September 15, 2017
Eastern Equine Encephalitis
Santa Rosa County, FL
Confirmed Case(s): No Quarantine
Source: Florida Department of of Agriculture and Consumer Services

The Florida Department of of Agriculture and Consumer Services confirmed a case of Eastern Equine Encephalitis in a 5-year old unvaccinated horse with clinical signs starting on 8/27/17 in Santa Rosa County. The horse was euthanized  and is the 3 case of EEE in Florida in 2017.

September 15, 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 a Standardbred mare presenting with ataxia and facial twitching last month.  The mare died despite treatment and the mare's 3 month old foal was not affected. This is the 15th case of WNV in Wisconsin in 2017. 

September 15, 2017
Eastern Equine Encephalitis
Chippewa 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 Eastern Equine Encephalitis in an 8-year old unvaccinated Quarter Horse gelding with neurologic signs (stumbling, grinding of teeth, and head pressing) on 9/4/17. The horse was euthanized when it went down on 9/5/17. This is the 14th case of EEE in Wisconsin in 2017.

September 15, 2017
West Nile Virus
Riverside and Tehama Counties, CA
Confirmed Case(s): No Quarantine
Source: California Department of Food and Agriculture

The California Department of Food and Agriculture confirms two cases of West Nile Virus. An unvaccinated 4 year old Andalusian mare in Riverside County and an unvaccinated 12 year old Quarter Horse gelding in Tehama County displaying neurologic signs tested positive for WNV. The Quarter Horse gelding was euthanized due to the severity of the clinical signs. The Andalusian mare is recovering. For 2017, a total of 13 cases of equine WNV have been confirmed in California. For more information visit: https://www.cdfa.ca.gov/ahfss/animal_health/WNV_Info.html

 

September 15, 2017
Eastern Equine Encephalitis
Jackson 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 Eastern Equine Encephalitis in an unvaccinated 17-year old Quarter Horse mare. The horse was febrile, found down and non-responsive, and was euthanized on 8/27/17. This was the 12th EEE case in Wisconsin in 2017.

September 15, 2017
West Nile Virus
Owyhee County, ID
Confirmed Case(s): No Quarantine
Source: Idaho State Department of Agriculture

The Idaho State Department of Agriculture confirmed West Nile Virus in a 2-year old Appaloosa mare that had ataxia and muscle tremors. The horse is responding to medical treatment. For more information about WNV go to:  https://aaep.org/sites/default/files/Documents/Outside%20Linked%20Documents/DiseaseFactsheet_WNV.pdf