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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 05, 2018
West Nile Virus
Dearborn County, IN
Confirmed Case(s): No Quarantine
Source: Attending Veterinarian

The attending veterinarian confirmed West Nile Virus in a 10-year old Quarter Horse mare at a private facility in Dearborn County, Indiana. On October 1, 2018 the unvaccinated horse had facial twitching and ataxia. The horse is alive and receiving treatment. 

October 04, 2018
West Nile Virus
Niagara and Hamilton Municipalities and Perth County, ON
Confirmed Case(s): No Quarantine
Source: Ontario Ministry of Agriculture, Food and Rural Affairs

Between September 17 and October 2, 2018, the Ontario Ministry of Agriculture, Food and Rural Affairs was notified of five  positive test results for West Nile Virus (WNV) infection in horses.  The horses ranged in age from 2 to 6 years of age and they were all female. Clinical signs included muscle fasciculations, ataxia, collapse in the front or hind end and recumbency. All horses recovered with treatment. The horses were located in the following counties; 2 from the Regional Municipality of Niagara, 2 from Perth County and 1 from the Regional Municipality of Hamilton. The total number of cases in Ontario  for  2018 is seven. www.omafra.gov.on.ca/english/livestock/horses/facts/nhd_surv2018.htm

October 04, 2018
West Nile Virus
Madison and Franklin Counties, AR
Confirmed Case(s): No Quarantine
Source: Office of the Arkansas State Veterinarian

The Office of the Arkansas State Veterinarian has confirmed two cases of equine West Nile virus. A 6-year-old gelding at a private facility in Madison County showed an onset of clinical signs on September 18th, 2018 including neurological signs. Testing done at the Cornell University Animal Health Diagnostic Center confirmed WNV. The horse was not vaccinated. A 6-year-old Quarter Horse mare at a private facility in Franklin County showed an onset of clinical signs on September 26th including neurological signs. Testing done at the Oklahoma Animal Disease Diagnostic Laboratory confirmed WNV. The vaccination status of the horse is unknown.

October 04, 2018
Strangles
St. Clair County, MI
Confirmed Case(s): No Quarantine
Source: Michigan Department of Agriculture and Rural Development

The Michigan Department of Agriculture and Rural Development has confirmed a case of strangles in a three-year-old Quarter Horse filly from St. Clair County. The horse, which recovered, had nasal discharge and a cough. It was unclear if the horse had been vaccinated against the disease. No quarantine was issued. This case brings the total number of confirmed 2018 strangles cases in Michigan to 18.

October 03, 2018
Equine Infectious Anemia
Colorado, United States
Information Only
Source: Colorado State Veterinarian’s Office

The Colorado State Veterinarian’s Office at CDA has continued to work to trace and test horses involved in the August 2018 EIA Incident in Colorado (the first EIA incident). As of 10/3/2018 the following has been confirmed:  1.) The index premises in Weld County is under a Quarantine Order; two associated premises are under Hold Orders. The exposed horses under quarantine on the index premises will be re-tested on or after 10/19/2018 (sixty days after last exposure to the positive horse). 2.) 63 premises are under Hold Orders in 24 Colorado counties: Adams, Arapahoe, Archuleta, Boulder, Costilla, Crowley, Delta, Douglas, Eagle, Elbert, El Paso, Fremont, Gilpin, Gunnison, Huerfano, Jefferson, Larimer, Mesa, Moffat, Montrose, Morgan, Phillips, Sedgwick, and Weld.  3.) Six premises have been released from Hold Orders after the 60-day re-tests were completed for all exposed horse(s) on those premises and found to be negative. 4.) 145 exposed horses have been located in Colorado (out of approximately 153 we expect to be in the state). CDA is working diligently to locate the remaining eight horses. 5.) 72 exposed horses have been located in 12 other states (out of approximately 81 we expect to be out-of-state): Arizona, Idaho, Kentucky, Louisiana, Maine, Missouri, Nebraska, Nevada, Oklahoma, Tennessee, Texas, and Wyoming. 6.) Many of the exposed horses will be eligible for their final 60-day EIA re-test over the next two weeks. The CDA has informed owners of exposed horses to work with their veterinarians to get the re-testing done after the date stated on their Hold Orders. The date varies depending on the last date that their horse was exposed to the EIA-positive horse. At this time only the exposed horses need to be tested, not all of the horses on the premises under the Hold Order.

October 03, 2018
West Nile Virus
Winnebago County, WI
Confirmed Case(s): No Quarantine
Source: Wisconsin Department of Agriculture, Trade, and Consumer Protection

The Wisconsin Department of Agriculture, Trade, and Consumer Protection has confirmed its third Equine WNV case for 2018. The horse was a 5-year-old Tennessee Walking Horse gelding from Winnebago County that had been vaccinated in the past but was not current as he had not been vaccinated this year. He was euthanized September 12th after exhibiting severe neurologic signs.

October 03, 2018
West Nile Virus
Wagoner 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 a confirmed case of equine West Nile virus. The 6 year old Quarter Horse mare located in Wagoner 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

 

 

October 03, 2018
West Nile Virus
Fayette 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 3-year-old Thoroughbred filly in Fayette County presented with acute progressing ataxia on September 28th, 2018. The horse could rise and stand with assistance but was not drinking, was hypersensitive to touch, and had muscle fasciculation on muzzle and tricep areas. As of October 2nd, the horse is reported to be much improved with a favorable prognosis. The horse had no WNV vaccination history reported in 2018 but had been vaccinated in 2016 and 2017. For more information go to www.kyagr.com/statevet/west-nile-info.html

October 02, 2018
West Nile Virus
Polk County, IA
Confirmed Case(s): No Quarantine
Source: Iowa State Veterinarian’s Office

The Iowa State Veterinarian’s Office has confirmed 2 cases of equine West Nile virus. A 2-year old Quarter Horse mare & 4-year old Quarter Horse mare in Polk County first developed ataxia on September 24th. The horses are being treated symptomatically. Neither horse was vaccinated.

 

October 02, 2018
Equine Infectious Anemia
Weld County, CO
Outbreak Update
Source: Colorado Department of Agriculture

The Colorado State Veterinarians office has updated information on the second case of Equine Infectious Anemia (EIA) discovered in September 2018. This second case was confirmed on September 1st, at the National Veterinary Services Laboratory. The horse was in strict isolation during testing and was euthanized once the disease was confirmed. The small number of horses exposed to the EIA positive horse have been located and are quarantined or under Hold Orders with movement restrictions. This second case is unrelated to the initial EIA case detected in Colorado in August. These are two separate EIA incidents with no common movement, locations or horse use between the two cases.