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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.


November 04, 2016
West Nile Virus
Logan and Union Counties, KY
Confirmed Case(s): No Quarantine
Two additional cases of WNV in Kentucky were confirmed at Murray State University’s Breathitt Veterinary Center.  A 10-year old Belgian mare in Logan County began showing clinical signs on October 31st. This horse presented with lethargy, mild ataxia predominantly in rear limbs, inappetence. The attending veterinarian reported horse was showing some improvement on November 3rd. This horse has no WNV vaccination history.  The second horse, a 2-year old American Saddlebred colt in Union County with no WNV vaccination history, began showing clinical signs on October 31st. The colt presented with muscle fasciculation and mild ataxia. The attending veterinarian reported that colt was in stable condition, not worsening on November 3rd. These two cases are the 5th and 6th equine cases reported year-to-date in Kentucky, none of which are reported or thought to have been vaccinated.
November 03, 2016
Equine Herpes Viruses
Los Angeles County, CA
Confirmed case(s): Official Quarantine
On November 3, 2016, a 5 year-old Saddlebred displaying severe neurologic signs and a 10 year-old Saddlebred in Los Angeles County displaying moderate neurologic signs were confirmed positive for the non-neuropathogenic strain Equine Herpesvirus-1 at the California Animal Health and Food Safety Laboratory. Due to severity of clinical signs, the 5 year-old horse was euthanized on November 3, 2016. The Department has issued a quarantine for exposed horses at the facility and has implemented enhanced biosecurity measures. All exposed horses will have temperatures taken twice daily and be observed for clinical signs compatible with EHV. The two confirmed positive horses, along with four other horses, recently returned from a horse show in Las Vegas, NV from Oct. 27-29, 2016. These horses returned to the California home premises on October 30. Out of an abundance of caution, show management has notified trainers/owners participating in the event to recommend twice daily temperature monitoring and observation of compatible clinical signs. CDFA Animal Health Branch veterinarians are onsite monitoring the situation and will provide additional updates as they become available.
November 02, 2016
Eastern Equine Encephalitis
Highlands County, FL
Confirmed Case(s): No Quarantine
On November 2, a new EEE case was confirmed in Highlands County, Florida. The 2 year old grade gelding had never received any type of vaccination and had no recent travel history. Clinical signs began on October 25 and the horse was euthanized for humane reasons the following day. This is the second confirmed EEE case in Highlands County and case 22 in Florida for 2016.
October 28, 2016
Eastern Equine Encephalitis
Wood County, WI
Confirmed Case(s): No Quarantine
Wisconsin confirmed equine EEE case on October 28, 2016. The horse was an unvaccinated 12-year-old Quarter Horse gelding from Wood County. The horse showed signs of circling and ataxia on 10/25/16 and was down, became unresponsive in approximately 8 hours and subsequently died. This is the 19th confirmed case of EEE in Wisconsin in 2016.
October 25, 2016
West Nile Virus
Choctaw, Payne, Beckham, and Atoka Counties, OK
Confirmed Case(s): No Quarantine
The Oklahoma Department of Agriculture has confirmed four more WNV positive horses this week bringing the total up to 9 for 2016. A 8yr pony gelding located in Choctaw County was showing severe neurologic signs, including leg paralysis, and was euthanized. The pony was not vaccinated for WNV. A yearling QH filly located in Payne County was showing moderate neurologic signs, including hind limb ataxia. The horse was not vaccinated for WNV. A 16yr QH gelding located in Beckham County was showing mild neurologic signs and is recovering. The horse was not vaccinated for WNV. A 7yr QH gelding located in Atoka County was showing severe neurologic signs, including hind limb paralysis and was euthanized. Vaccination history is unknown. For more information visit: http://www.ag.ok.gov
October 25, 2016
Strangles
Miami-Dade County, FL
Confirmed case(s): Official Quarantine
On October 25, one premise in Miami-Dade County, Florida was placed under quarantine for strangles. Clinical signs began Oct 18. No animals have left the facility since clinical signs began. This is the fourth case in Miami-Dade County and the 21st case for Florida in 2016.
October 25, 2016
West Nile Virus
Palm Beach County, FL
Confirmed Case(s): No Quarantine
On October 24, a new WNV case was confirmed in Palm Beach County, Florida. The donkey had no vaccine history and was imported from a Louisiana auction into Florida on October 16 with no clinical signs. Clinical signs began on October 18 and currently the donkey is recovering. This is the first confirmed WNV case in Palm Beach County and the second confirmed case in Florida for 2016. Given the travel history and incubation period for WNV, the donkey most likely did not acquire WNV in Palm Beach County.
October 18, 2016
Eastern Equine Encephalitis
Osceola County, FL
Confirmed Case(s): No Quarantine
On October 18, a new EEE case was confirmed in Osceola County, Florida. The 4 year old grade male’s vaccination history is unknown and he had no recent travel history. Clinical signs began on October 9 and the horse was euthanized for humane reasons one day later. This is the fifth confirmed EEE case in Osceola County and case 21 in Florida for 2016.
October 13, 2016
West Nile Virus
Calhoun County, MI
Confirmed Case(s): No Quarantine
On October 10, the Michigan Department of Agriculture and Rural Development was notified of a confirmed case of West Nile virus (WNV). This is Michigan’s first reported case of WNV in equine for 2016. The affected horse is a five-month old filly in Calhoun County. On October 2, the filly began to develop signs of illness, including stumbling and lethargy. The unvaccinated filly is responding to treatment. The dam was vaccinated against WNV two weeks after foaling, and the filly is not yet weaned.
October 11, 2016
Eastern Equine Encephalitis
Waupaca County, WI
Confirmed Case(s): No Quarantine
A ~3-yr.-old unvaccinated Quarter Horse stallion from Waupaca County presented 10/2/16, unable to stand on its own, falling to the right, and eventually going down. The horse died on 10/3/16. There is no quarantine. That is Wisconsin’s 18th case of equine EEE this year.