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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 29, 2018
West Nile Virus
Holmes County, OH
Confirmed Case(s): No Quarantine
Source: Ohio Department of Agriculture

The Ohio Department of Agriculture confirmed a case of West Nile Virus (WNV) in a 3-year old Standardbred mare in Holmes County. On August 18, 2018 the horse exhibited stiffness, lip droop, tremors and ataxia over a 5 day period and was unresponsive to medical therapy. The horse was euthanized on 8/22/18. After determining that brain tissue was negative for rabies, PCR assay at the Ohio ADDL detected WNV nucleic acid in brain stem tissue of this horse. The horse was not vaccinated against WNV. This is the second WNV positive horse from Holmes County and the fourth case in Ohio in 2018.

August 28, 2018
West Nile Virus
Polk County, IA
Confirmed Case(s): No Quarantine
Source: Iowa State Veterinarian

The Iowa State Veterinarian confirmed West Nile Virus in a 2-year old Quarter Horse at a private facility in Polk County. On August 23, 2018 the mare was febrile and ataxic on initial examination and subsequently euthanized on August 25, 2018.

August 28, 2018
West Nile Virus
Hampshire County, MA
Confirmed Case(s): No Quarantine
Source: Massachusetts Department of Public Health

The Massachusetts Department of Public Health has confirmed a case of West Nile Virus in a horse in Hampshire County which was euthanized as a result. For more information go to https://www.mass.gov/news/state-health-officials-announce-first-three-human-cases-and-one-horse-case-of-west-nile-virus

 

August 28, 2018
West Nile Virus
Tuscarawas and Medina Counties, OH
Confirmed Case(s): No Quarantine
Source: Ohio Department of Agriculture

The Ohio Department of Agriculture has confirmed two cases of West Nile Virus. An unvaccinated, 4-year-old Standardbred gelding at a private facility in Tuscarawas County presented with a fever of 103o F on August 15, 2018. A serum sample was collected that day and was positive for IgM antibody by capture ELISA assay. The horse appeared clinically healthy as of August 24, 2018 after receiving supportive treatment and care. An unvaccinated, 8-year-old Halflinger gelding in Medina County presented on August 19, 2018 with clinical signs including a temperature of 103.7o F, stiff stilted gait, inability or reluctance to move, tremors over shoulders and neck, lip droop and twitching, and showed hyperesthesia to touch and noise. The horse appeared to be recovering as of August 23, 2018, after supportive treatment and care.

August 27, 2018
West Nile Virus
Maricopa County, AZ
Confirmed Case(s): No Quarantine
Source: Arizona Department of Agriculture

On August 23, 2018 the Arizona Department of Agriculture confirmed West Nile Virus (WNV) in one horse in Maricopa County. On August 17, 2018 the 18-month old Filly had acute onset of neurologic signs. The horse had moved with other horses from Wyoming on August 14, 2018. No other horses on the property are showing symptoms and this horse is responding to treatment. On August 24, 2018 as second case of WNV was confirmed 18-month Quarter Horse in Maricopa County. The 18-month old gelding had acute onset of neurologic signs. No other horses on the property are showing symptoms and this horse is responding to treatment. These are the first and second WNV cases this year in Arizona.

August 27, 2018
Equine Infectious Anemia
Sweetwater County, WY
Confirmed case(s): Official Quarantine
Source: Wyoming Livestock Board

On Friday August 25th, the Wyoming Livestock Board was notified by the Colorado Department of Agriculture that a horse which tested positive in Colorado for Equine Infectious Anemia (EIA) had been moved to Sweetwater County Wyoming. While the horse was tested in Colorado, it was shipped prior to test results being read and reported and without an Interstate Certificate of Veterinary Inspection. The horse was returned to Colorado and subsequently Wyoming has quarantined 41 exposed equine on the premise where the horse had been prior to going back to Colorado. These equine were exposed to the positive Colorado horse for 6 days and will be tested initially on August 30th and again sixty days later. Another two exposed horses from the Colorado premises were shipped to Lincoln County with a negative EIA test. They will remain under quarantine and re-tested at 60 days. None of these equine are race horses.

August 27, 2018
Eastern Equine Encephalitis
Chesapeake, VA
Confirmed Case(s): No Quarantine
Source: Virginia Department of Agriculture and Consumer Services

The Virginia Department of Agriculture and Consumer Services confirmed of Eastern Equine Encephalitis (EEE) in an American Quarter Horse stabled in Chesapeake, Virginia. The horse had an incomplete vaccination history and was euthanized due to its illness. This is the second case of EEE in Virginia in 2018. For more information go to: http://www.vdacs.virginia.gov/animals-eastern-equine-encephalitis.shtml

August 25, 2018
Eastern Equine Encephalitis
Monmouth County, NJ
Confirmed Case(s): No Quarantine
Source: New Jersey Department of Agriculture

The New Jersey Department of Agriculture confirmed the first case of Eastern Equine Encephalitis (EEE) in Monmouth County. A 5-year old mare had been vaccinated in 2017 but not in 2018. The mare was euthanized on August 18, 2018.  For more information go to:  https://aaep.org/sites/default/files/Documents/Outside%20Linked%20Documents/DiseaseFactsheet_EEE1.pdf

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.