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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 11, 2016
Equine Infectious Anemia
Cortland and Cayuga Counties, NY
Quarantine Released
On 8/10/2016, the New York State Department of Agriculture and Markets, Division of Animal Industry completed a 5-month long investigation of Equine Infectious Anemia (EIA) in 11 horses in Cortland and Cayuga Counties. All exposed horses have tested negative and their respective farms have been released from quarantine. For more info go to: http://www.agriculture.ny.gov/TheDepartment.html.
August 05, 2016
Equine Influenza
Yolo County, CA
Confirmed case(s): Official Quarantine
Eight horses confirmed to have equine influenza are in quarantine at the veterinary teaching hospital at the University of California at Davis in Yolo County. Clinical signs include fever, coughing and nasal discharge. The origin of the first case is under investigation. For more information go to: http://www.vetmed.ucdavis.edu/whatsnew/article.cfm?id=3597
August 05, 2016
West Nile Virus
Burleigh County, ND
Confirmed Case(s): No Quarantine
A case of WNV was confirmed in a mule in Burleigh County. The unvaccinated mule was euthanized due to neurologic clinical signs.
August 05, 2016
Eastern Equine Encephalitis
Hopewell, VA
Confirmed Case(s): No Quarantine
The Virginia Department of Agriculture and Consumer Services (VDACS) today announced the fourth case of Eastern Equine Encephalitis (EEE) in a Virginia horse this year. The horse, a six-year-old Tennessee Walking Horse mare, was from Hopewell. The horse had not been vaccinated since 2014 and was euthanized because of the severity of her symptoms. Go to: http://www.vdacs.virginia.gov/animals-eastern-equine-encephalitis.shtml
August 05, 2016
West Nile Virus
Croix County, WI
Confirmed Case(s): No Quarantine
A 4-year-old Quarter Horse gelding was diagnosed with West Nile Virus in St. Croix County, Wisconsin, this week. At onset of clinical signs the horse showed signs of paresis, but was able to rise with assistance and stand for short periods of time. Samples taken on July 27th confirmed the diagnosis today. The horse died earlier this week.
August 05, 2016
West Nile Virus
Weld County, CO
Confirmed Case(s): No Quarantine
A 6 yr old Friesian mare in Weld County, Colorado has been diagnosed with West Nile Virus (WNV). This is the first confirmed case of WNV in Colorado in a horse in 2016. This index case was diagnosed by Colorado State University Veterinary Diagnostic Laboratory in Fort Collins. The mare, which was imported from Mexico 30 days prior, appears to be recovering from front limb paralysis weakness.
August 05, 2016
West Nile Virus
Cayuga County, NY
Confirmed Case(s): No Quarantine
An unvaccinated, 8yr old stallion was diagnosed with WNV earlier this week. Owner first noticed symptoms on 7/25/2016. Horse exhibited the following: holding head in a fixed low position, blind, febrile and ataxia. Horse went down despite veterinary treatment. Horse was euthanized on 7/27/2016. EEE and Rabies tests were negative.
August 04, 2016
West Nile Virus
Mille Lacs, MN
Confirmed Case(s): No Quarantine
The Minnesota Board of Animal Health has confirmed its second case of WNV. The draft cross stallion, located in Mille Lacs county, is showing neurologic signs but is still alive. The horse’s vaccination status is unknown.
August 03, 2016
Eastern Equine Encephalitis
Madison, TN
Confirmed Case(s): No Quarantine
A horse in Madison County, Tennessee has tested positive for Eastern Equine Encephalitis (EEE), a virus that can be fatal for horses and humans. The horse did not survive. The Tennessee departments of Agriculture and Health are advising citizens to take precautions to protect themselves and their livestock. - See more at: https://www.tn.gov/agriculture/news/44502#sthash.1329PFVY.dpuf
August 03, 2016
West Nile Virus
Sibley County, MN
Confirmed Case(s): No Quarantine
An unvaccinated horse in Sibley County, Minnesota has tested positive for West Nile Virus and is severely ill. The 1.5-year-old Friesian stallion has been unable to stand for a week and is receiving supportive care. This is the first confirmed case of 2016 affecting a Minnesota horse. For more information go to: https://www.bah.state.mn.us/news_release/west-nile-virus-confirmed-in-sibley-county-horse/