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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 20, 2018
West Nile Virus
Holmes County, OH
Confirmed Case(s): No Quarantine
Source: Ohio Department of Agriculture

The Ohio Department of Agriculture has confirmed a case of West Nile Virus at a private facility in Holmes County. An unvaccinated yearling Standardbred filly showed an onset of signs on August 6th, 2018 which included rear limb paresis, recumbency, and depression. The horse was euthanized despite treatment. Test samples were submitted to the National Veterinary Services Laboratory and confirmed on IgM capture ELISA.

 

August 20, 2018
Strangles
Pasco and Marion Counties, FL
Confirmed case(s): Official Quarantine
Source: Florida Department of Agriculture

On August 10th, the Florida Department of Agriculture and Consumer Services placed one premises under quarantine in Pasco County for Strangles. One of the 31 horse on the property is showing clinical signs at this time. On August 14th, the Florida Department of Agriculture and Consumer Services placed one premises under quarantine in Marion County for exposure of Strangles. None of the 33 horses on the property are showing clinical signs at this time.

August 20, 2018
West Nile Virus
Levy County, FL
Confirmed Case(s): No Quarantine
Source: Florida Department of Agriculture

On August 18th, the Florida Department of Agriculture and Consumer Services received confirmation of one horse in Levy County who tested positive for West Nile Virus (WNL). The eight-year old mare, who was last vaccinated approximately 5 year ago, became clinical on August 10th and was euthanized on August 11th due to a poor prognosis. This is the first reported WNV case this year in Florida.

August 20, 2018
Eastern Equine Encephalitis
Levy and Volusia Counties, FL
Confirmed Case(s): No Quarantine
Source: Florida Department of Agriculture and Consumer Services

On August 8th, the Florida Department of Agriculture and Consumer Services received confirmation of one horse in Levy County who tested positive for Eastern Equine Encephalitis (EEE). The one-year old Thoroughbred stallion with an unknown vaccination history became clinical on August 1st and was humanely euthanized on August 2nd due to a poor prognosis. On August 6th, the Florida Department of Agriculture and Consumer Services received confirmation of one horse in Volusia County who tested positive for Eastern Equine Encephalitis (EEE). The one-year old Miniature Horse mare, who was last vaccinated in January of 2018, became clinical on August 1st and was humanely euthanized on the same day due to a poor prognosis. This year, there have been 51 reported cases of EEE in Florida.

August 20, 2018
Eastern Equine Encephalitis
Marion County, FL
Confirmed Case(s): No Quarantine
Source: Florida Department of Agriculture

On July 31st, the Florida Department of Agriculture and Consumer Services received confirmation of three horses at separate premises, in separate towns in Marion County, which tested positive for Eastern Equine Encephalitis (EEE).  A one-year old Quarter Horse mare with an unknown vaccination history became clinical on July 24th and was humanely euthanized on July 25th due to a poor prognosis. A one-year old Thoroughbred stallion with an unknown vaccination history became clinical on July 21st and was humanely euthanized on July 22nd due to a poor prognosis. A one-year old unvaccinated Pony stallion became clinical on July 20th and was humanely euthanized on July 22nd due to a poor prognosis.

August 20, 2018
West Nile Virus
Kern, Placer, and Sacramento Counties, CA
Confirmed Case(s): No Quarantine
Source: California Department of Food and Agriculture

The California Department of Food and Agriculture, reports four additional equines displaying neurologic signs were confirmed positive for West Nile Virus. For 2018, a total of five (5) horses have been confirmed positive for West Nile Virus. The positive horses are located in Kern, Placer, Sacramento (2) and Shasta counties. Three (3) horses were unvaccinated and two (2) horses were vaccinated. Three (3) horses died or were euthanized and two (2) horses are alive. CDFA continually monitors and investigates equine neurologic cases for the presence of WNV in California. CDFA urges horse owners to consult their veterinarian concerning a WNV vaccination program to ensure maximum protection of their horses. For more information visit https://www.cdfa.ca.gov/ahfss/animal_health/WNV_Info.html .

August 18, 2018
West Nile Virus
Larimer County, CO
Confirmed Case(s): No Quarantine
Source: Colorado Department of Agriculture

The Colorado Department of Agriculture confirmed the first case of West Nile Virus in Colorado for 2018. The index case was diagnosed by Colorado State University Veterinary Diagnostic Laboratory on August 15, 2018.

August 17, 2018
West Nile Virus
Howard County, IA
Confirmed Case(s): No Quarantine
Source: Iowa State Veterinarian

The Iowa State Veterinarian has confirmed a case of West Nile virus in Howard County. An unvaccinated, mixed breed, yearling filly showed an onset of clinical signs on August 10th, 2018 including hind end weakness, ataxia, and fever. WNV was confirmed at the USDA National Veterinary Services Laboratory. The status of the horse is unknown.

August 17, 2018
Strangles
Livingston and Washtenaw Counties, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department of Agriculture and Rural Development

The Michigan Department of Agriculture and Rural Development has confirmed two new cases of strangles. One case is in a two-year-old Quarter Horse gelding from Livingston County. The horse had a history of coughing. The horse underwent endoscopy and was found to have discharge in the guttural pouch. The horse was cultured for strangles on August 7th, 2018 and discharge cultured positive for the bacteria that causes strangles. The horse’s vaccination history is unknown. No quarantines were issued. The second case is in a 16-year-old Quarter Horse gelding from Washtenaw County. The horse developed a sudden onset of coughing, inappetence, fever, and nasal discharge on August 4th, 2018. The horse was not vaccinated against strangles. No quarantines were issued. Another horse at the property was previously confirmed to have strangles in June. These cases bring the total number of cases of strangles in Michigan for 2018 to 13 from the following counties: Chippewa, Clinton, Ionia, Livingston, Montcalm, Shiawassee, St. Clair, Washtenaw, and Wayne.

August 17, 2018
Eastern Equine Encephalitis
Oswego County, 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 the state’s first 2018 EEE case in a horse from West Monroe, NY (Oswego Co). The 2-year old gelding started to show signs on August 8, 2018. The gelding was found down in the woods, was blind with a high fever. The horse died the following day. Brain samples submitted along with concurrent signs of illness confirmed an active EEE infection.