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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 24, 2018
West Nile Virus
Clark County, ID
Confirmed Case(s): No Quarantine
Source: Idaho State Veterinarian

The Idaho State Veterinarian has confirmed a case of WNV in Clark County. The 5 year old Quarter Horse mare, which had never been vaccinated for WNV, showed an onset of clinical signs on August 17th, 2018 including progressive neurological signs. WNV was confirmed at the Idaho State Department of Agriculture Animal Health Laboratory.

 

August 24, 2018
West Nile Virus
Suffolk County, NY
Confirmed Case(s): No Quarantine
Source: New York State Department of Agriculture and Markets

The New York State Dept of Agriculture and Markets is confirming the state’s second 2018 West Nile Virus case in a horse from Watermill, NY (Suffolk County). The 5-year old mare showed signs on Aug 20, 2018. The horse was febrile, off feed and had difficulty eating and possibly breathing. The horse went down overnight and died on Aug 21, 2018. Blood sample results for WNV along with concurrent signs of illness confirmed active WNV infection. The horse had not been vaccinated for WNV. The horse had no recent travel history.

August 23, 2018
West Nile Virus
Cascade, Powder River, Blaine, Wheatland, Lewis and Clark, and Yellowstone Counties, MT
Confirmed Case(s): No Quarantine
Source: Montana Department of Livestock

The following cases of West Nile Virus have been confirmed by the Montana Department of Livestock: On August 7th, 2018, one case was confirmed in Cascade County. On August 14th, 2018, one case each was confirmed in Lake and Cascade Counties. One August 15th, 2018, one case was confirmed in Cascade County. On August 16th, 2018, two cases were confirmed in Cascade County, and one was confirmed in Powder River County. On August 17th, 2018 one case each was confirmed in Blaine, Wheatland, and Cascade Counties. On August 20th, 2018, one case was confirmed in Lewis and Clark County. On August 21st, 2018, five cases were confirmed, three in Cascade County, one in Lewis and Clark County, and one in Yellowstone County.

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.