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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 21, 2018
Equine Infectious Anemia
Colorado, United States
Information Only
Source: Colorado State Veterinarian’s office

The Colorado State Veterinarian’s office has reported the following information: as of September 20th, 2018, the Equine Infectious Anemia (EIA) Incident in Colorado has resulted in only one confirmed positive EIA horse in Colorado which is the index case. The index premises in Weld County is under a quarantine order; two associated premises are under hold orders. Fifty-one (51) premises are under hold orders in 20 Colorado counties: Adams, Arapahoe, Boulder, Crowley, Delta, Douglas, Eagle, Elbert, El Paso, Fremont, Gilpin, Gunnison, Huerfano, Jefferson, Larimer, Mesa, Moffat, Montrose, Phillips, and Weld Counties. The counties are not under Hold Orders, only the premises within the counties are under the Hold Orders until re-testing is complete. 122 exposed horses that left the index premises have been located in Colorado and are under Hold Orders. 124 exposed horses under quarantine on the index premises tested negative for EIA last week; they will be re-tested on or after 10/19/2018 (sixty days after last exposure to the positive horse). Fifty-seven (57) exposed horses that left the State have been positively identified in nine other states: Arizona, Kentucky, Louisiana, Maine, Nebraska, Nevada, Oklahoma, Texas, and Wyoming. Some of the exposed horses will be eligible for their final 60-day EIA re-test in the next week – CDA is working with those individual horse owners and their veterinarians so that the Hold Orders can be released on a final negative test.

 

September 21, 2018
West Nile Virus
Navajo and Coconino Counties, AZ
Confirmed Case(s): No Quarantine
Source: Arizona State Veterinarian’s office

The Arizona State Veterinarian’s office has received notification of two confirmed cases of West Nile virus (WNV) in horses over the last week. One horse is in Navajo county and the other is in N. Coconino county. Both horses are reportedly responding well to treatment. All of the confirmed cases were in unvaccinated horses or horses with an unknown vaccination history.

September 21, 2018
West Nile Virus
Washington, Orleans, Ontario, Lewis, and Erie 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 confirmed 5 more cases of West Nile Virus. No cases or premises are quarantined at this time. A 4-year gelding from Ft. Edward (Washington County) was euthanized on September 6, 2018 after falling on September 3rd. A 9-year old gelding from Lyndonville (Orleans County) is recovering, a 10-year old mare from Canandaigua (Ontario County), a 5-year mare from Lowville (Lewis County) is recovering and a 18-year old gelding from Eden (Erie County) is recovering. All are under veterinary oversight.

September 20, 2018
West Nile Virus
Boyle, Harrison, Jackson, and Mercer Counties, KY
Confirmed Case(s): No Quarantine
Source: Office of the Kentucky State Veterinarian

The Office of the Kentucky State Veterinarian has reported four confirmed cases of equine West Nile virus. A 15-year-old Tennessee Walking Horse mare with no WNV vaccination history in Boyle County showed an onset of clinical signs on September 18th, 2018 including ataxia. The horse progressively worsened and was euthanized on September 20th. A 5-year-old pleasure mare with no WNV vaccination history in Harrison County showed an onset of clinical signs on September 15th including lethargy, muscle fasciculation in the lower jaw and chest areas, and rear limb ataxia. The horse was euthanized. An 18- month-old Standardbred filly with no WNV vaccination history in Jackson County showed an onset of clinical signs on September 10th. The horse was described as in serious condition with rear limb ataxia and was crossing over with the front feet. The horse was advised to be rechecked on September 20th. A 12-year-old American Saddlebred mare in Mercer County showed an onset of clinical signs on September 13th including ataxia, muscle fasciculation, and a low-grade fever. The horse was euthanized on September 19th and had no WNV vaccination history. Testing for all four cases was completed and reported by the University of Kentucky Veterinary Diagnostic Lab; cases were confirmed based on detectable WNv IgM antibodies.

September 20, 2018
West Nile Virus
Lyon, Seward, Neosho, Marion and Wichita counties, KS
Confirmed Case(s): Voluntary Quarantine
Source: Kansas Department of Agriculture Division of Animal Health

The Kansas Department of Agriculture Division of Animal Health has received notification of multiple confirmed cases of West Nile virus (WNV) in horses across the state over the past few weeks. Confirmed cases have been reported in Lyon, Seward, Neosho, Marion and Wichita counties. All of the confirmed cases were in unvaccinated horses or horses with an unknown vaccination history. For more information go to http://agriculture.ks.gov/AllNewsItems/2018/09/20/west-nile-virus-confirmed-in-horses-in-kansas

September 20, 2018
West Nile Virus
Anderson County, SC
Confirmed Case(s): Voluntary Quarantine
Source: South Carolina State Veterinarian’s office

The South Carolina State Veterinarian’s office has received laboratory confirmation for the second case of West Nile Virus in SC in 2018 in Anderson County. The case was a 20 yr. old mustang gelding that had no vaccination history and recovered. There is one other equid on the premises, and vaccination and quarantine has been self-imposed by the owner.

September 19, 2018
Equine Infectious Anemia
Dallas County, TX
Confirmed case(s): Official Quarantine
Source: Texas Animal Health Commission

On June 13, 2018, Texas Animal Health Commission (TAHC) officials reported Equine Infectious Anemia (EIA) in one Dallas County Quarter Horse. Since that time, one additional horse from the quarantined premises has been confirmed positive for EIA. In addition, TAHC officials have confirmed EIA in another unrelated Dallas County Quarter Horse. The positive horses have been euthanized. The premises in Dallas county will remain under quarantine until requirements for release have been met. TAHC staff is working closely with owners and veterinarians to monitor potentially exposed horses and implement biosecurity measures.

September 18, 2018
Strangles
Ostego and Livingston Counties, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department of Agriculture and Rural Development

The Michigan Department of Agriculture and Rural Development  confirmed two new cases of Strangles. On September 2, 2018 a 15-year-old, unvaccinated Quarter Horse gelding from Otsego County was found with nasal discharge from one  nostril. The other case was a two-year-old, unvaccinated Quarter Horse mare from Livingston County. The mare developed nasal discharge and enlarged glands that ruptured and abscessed on September 10th. Both horses are under the care of a veterinarian and no quarantines were issued with either case. These two cases bring the total number of confirmed 2018 strangles cases in Michigan to 17.

September 18, 2018
West Nile Virus
Bremer County, IA
Confirmed Case(s): No Quarantine
Source: Iowa State Veterinarian

The Iowa State Veterinarian has confirmed a case of equine West Nile virus. An unvaccinated 14-year-old Quarter Horse gelding at private facility in Bremer County started showing clinical signs on September 11th, 2018 including ataxia, depression, and a low grade fever. The horse was treated symptomatically and is recovering. Testing done at Iowa State University Veterinary Diagnostic Laboratory confirmed WNV.

September 18, 2018
West Nile Virus
Ellis 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 first positive equine West Nile Virus case in 2018.The 7 year old POA gelding located in Ellis County was showing moderate neurologic signs.  The horse was currently vaccinated for WNV.  A quarantine was not issued.  For more information visit:http://www.ag.ok.gov