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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.


October 25, 2018
Strangles
Municipality of North Grenville, ON
Confirmed case(s): Official Quarantine
Source: Canadian Animal Health Surveillance System

The Canadian Animal Health Surveillance System has reported a horse has tested positive for strangles in the township of North Grenville, Ontario. An 8 year old unvaccinated (Strangles) Quarter Horse mare presented with clinical signs of coughing, lethargy and pyrexia on September 27, 2018. Samples were taken for Strangles PCR and results were received on October 3, 2018 that she tested positive for Strep equi (Strangles). The mare has been kept in a quarantined paddock since the identification of clinical signs. Treatment with anti-inflammatories and antibiotics was initiated and she is recovering well. At this time, no other cases have been identified. https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.rideauvet.com&c=E,1,RnjT5eyUQ1BQI_6AmtNBjUMjK5nz6uQURrw1dx24Q8VaXnGBLBOVmJWCzrb4XoSU3h1KhzC2WsNJXv4kNKd9b_-Ay_Kdnt4jtv2-hiCEQRkgqjE,&typo=1

October 24, 2018
West Nile Virus
Barren County, KY
Confirmed Case(s): No Quarantine
Source: Office of the Kentucky State Veterinarian

The Office of the Kentucky State Veterinarian has confirmed a case of equine West Nile virus. A 7-year-old Quarter Horse mare with no vaccination history in Barren County showed an onset of clinical signs on September 9th, 2018 including fever, ataxia, and little tongue tone. The horse responded well to treatment and on 10/23 was described as fully recovered. This is the 13th case of equine WNV confirmed in KY for 2018.

 

October 24, 2018
Eastern Equine Encephalitis
Livingston and Chautauqua Counties, NY
Confirmed Case(s): No Quarantine
Source: New York State Department of Agriculture and Markets

The New York State Department of Agriculture has reported two confirmed cases of equine Eastern Equine Encephalitis. A 3-year-old, unvaccinated mare from Nunda, NY (Livingston Co) began showing signs of hindlimb weakness on October 11th, 2018 which progressed over a few days. As of 10/19/18, she is alive and still showing signs of ataxia despite medical care. Blood samples confirmed her WNV infection. An 8-year-old, unvaccinated gelding from Clymer, NY (Chautauqua Co) became ill on October 13th, 2018. The owner reported that the horse was weak and stiff in limbs and acting abnormal. By 10/14 the horse was down, unable to use its legs. The horse was euthanized due to poor quality of life. Blood samples were taken and confirmed EEE infection.

 

October 24, 2018
West Nile Virus
Kent County, DE
Confirmed Case(s): No Quarantine
Source: Office of the Delaware State Veterinarian

The Office of the Delaware State Veterinarian has confirmed one case of West Nile Virus in Kent County. A 6-year-old, unvaccinated Belgian mare displayed neurological clinical signs from October 12-18, 2018. Diagnostic testing at the National Veterinary Services Laboratory confirmed WNV on 10/23/18. The mare displayed whole body stiffness (acting sore), and abnormal mentation, described as extreme aggression towards the reporting veterinarian during handling. The aggression was atypical for this animal, which is normally very gentle. When first seen on 10/14/18, the horse was afebrile, was not ataxic, was not weak or wobbly, and was lacking notable muscle fasciculations. With 3-4 days of anti-inflammatory treatment, the horse improved markedly and was back to normal by 10/18/18.

October 24, 2018
Equine Herpes Viruses
Maricopa County, AZ
Confirmed case(s): Official Quarantine
Source: Arizona State Veterinarian

On October 19, 2018 the Arizona State Veterinarian confirmed Equine Herpesvirus Myeloencephalopathy (EHM) in a yearling filly which exhibited neurological signs in Maricopa County.Another yearling on the property had been to an event 3 weeks prior and was showing neurologic signs, but at this time has tested negative for EHV. The facility in Maricopa county was placed under quarantine for EHM. A hold order was placed on the facility on October 20th. Temperatures are being monitored twice a day for the duration of the quarantine. Any horse that displays fever or clinical signs compatible with EHM will be reported to the State Veterinarian and will be tested. The event organizer where the yearling was exhibited was notified, and will reach out to contestants to recommend enhanced observation of horses and to increase biosecurity measures.

October 19, 2018
West Nile Virus
Magoffin County, KY
Confirmed Case(s): No Quarantine
Source: Office of the Kentucky State Veterinarian

The Office of the Kentucky State Veterinarian has reported a confirmed case of equine West Nile virus. A  5-year-olf Kentucky Mountain Horse gelding in Magoffin County with no vaccination history presented on October 10th, 2018 with muscle fasciculation, lethargy,  and inappetence. As of 10/17 the horse was described as much improved and does have a favorable prognosis

October 19, 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 has reported a confirmed case of Eastern Equine Encephalitis. An unvaccinated 3-month old-filly from Williamstown, NY (Oswego Co) became ill around 9/24/18. She exhibited mild symptoms of ataxia for over a week before a vet was contacted. On 10/3/18, she was euthanized. Her brain was submitted for rabies, EEE and WNV testing. Her brain sample was positive for EEE virus.

October 19, 2018
West Nile Virus
Washington, Chenango, Livingston Counties, NY
Confirmed Case(s): No Quarantine
Source: New York State Department of Agriculture and Markets

The New York State Department of Agriculture has reported three confirmed cases of equine West Nile virus. A 14-year-old gelding from Ft. Edward, NY (Washington Co) with no history of WNV vaccination became ill on October 10th, 2018. As of 10/18, horse is alive and continues to be monitored under veterinary care. An 11-year-old mare from Bainbridge, NY (Chenango Co) who was up to date on many vaccines, except WNV vaccine became ill on 10/7/18. As of 10/17/18, horse is alive but still showing some ataxia/stiffness. A 37-year-old gelding from Avon, NY (Livingston Co) with no recent vaccine history became ill on 9/29/18. His health rapidly declined and was euthanized on 10/3/18. Serology confirmed active West Nile Virus infection in all three of those cases.

 

October 17, 2018
West Nile Virus
Lewis County, KY
Confirmed Case(s): No Quarantine
Source: Office of the Kentucky State Veterinarian

The Office of the Kentucky State Veterinarian has confirmed two cases of equine West Nile virus in Lewis County. A 20-year-old Tennessee Walking Horse gelding with no WNV vaccination history presented with rear limb ataxia, muzzle fasciculations, and inappetence on October 11th, 2018. On 10/16/18 the attending veterinarian reported patient is continuing to improve. A 17-year-old Tennessee Walking Horse mare with no WNV vaccination history showed an onset of clinical signs on 10/11/18 including ataxia and muzzle fasciculations. On 10/16 the attending veterinarian reported that the patient is continuing to improve. The Department of Agriculture’s Equine West Nile web page has been updated to reflect these additional two cases reported in 2018.

October 17, 2018
West Nile Virus
Smyth County, VA
Confirmed Case(s): No Quarantine
Source: Virginia Department of Agriculture and Consumer Services

The Virginia Department of Agriculture and Consumer Services (VDACS) has confirmed a case of equine West Nile virus in Smyth County. An unvaccinated, 22 year old Tennessee Walking Horse gelding developed an abnormal gait on 10/8/18. Serum from the horse was tested using by IgM Capture ELISA at the VDACS Warrenton Regional Animal Health Laboratory.The horse has slowly improved since onset with supportive therapy. This is the 4th case of equine WNV in Virginia  in 2018.