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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.


Date Disease Location Status
January 18, 2017 Eastern Equine Encephalitis Jefferson County, FL Confirmed Case(s): No Quarantine
On January 18, a new EEE case was confirmed in Jefferson County, Florida. The 6 year old quarter horse mare was a recent rescue and had unknown vaccine history and been transported to Wakulla County days before clinical signs began on December 28. The mare was euthanized due to poor prognosis. This was the fourth confirmed EEE case in Jefferson County and case 24 in Florida for 2016. Cases are maintained by date of onset of clinical signs.
January 16, 2017 Equine Herpes Viruses New Orleans, LA Outbreak Update
On Monday, January 16, 2017, the quarantined horse from Barn 20 at the Fair Grounds racetrack was released from isolation and moved to the barn of origin after receiving two reported negative tests at least 72 hours apart. Enhanced biosecurity continues with the assistance of Louisiana Racing Commission, Fairgrounds, and USDA VS. Additional onsite quarantine capacity has facilitated planned isolation today
January 14, 2017 Strangles Alachua County, FL Confirmed case(s): Quarantine
On January 14, one premise in Alachua County, Florida was placed under quarantine for clinical signs consistent with strangles. The clinical horse was purchased from another farm also currently under strangles quarantine. The purchase and movement occurred 3 weeks prior clinical signs appearing on either farm. the case was reported to the state on January 13. No equids have left the facility since clinical signs began. This is the first case for Alachua County and Florida’s third case in 2017.
January 14, 2017 Equine Herpes Viruses New Orleans, LA Outbreak Update
On January 13, 2017, a new case in Barn 45 at the Fair Grounds racetrack was moved to isolation. January 14, 2017 incident plans were distributed to the Fair Grounds for further distribution to the back stretch. The Racing Commission provided additional biosecurity support with the help of the Louisiana State Police. Testing of pony horses will begin on Monday. Testing of quarantined barns will resume on Tuesday.
January 13, 2017 Equine Herpes Viruses Oldham County, KY Outbreak Update
Results of testing done on horses on the second Oldham County premises did identify 5 additional horses to be positive by PCR on the nasal swab. As was the first case in this investigation, the strain of EHV1 identified is the ‘wild strain’, not the mutated strain. Testing of the each blood sample was reported neg by PCR. The 5 positive horses were removed from the barn and placed in a separate isolation early this morning (1/13/17). Monitoring of horses in the other barns continues, and there has been no evidence discovered suggesting the virus has spread to other barns or areas on the premises. Health monitoring of the population continues and individual reports assessed daily.
January 13, 2017 Equine Herpes Viruses Oldham County, KY Outbreak Update
As of 1/13/2017 there have been no additional cases found at the first Oldham County premises since the last cases diagnosed on 1/6. Daily monitoring continues and the reports show no significant findings. There have been 4 horses on Premises 1 identified as positive, and in all cases the mutated strain of virus was identified. Traces from Premises 1 were conducted and did result in 2 additional horses being identified as positive. Each of these horses are on private facilities. Both of the positive horses and their cohorts remain isolated and monitoring continues.
January 13, 2017 Equine Herpes Viruses New Orleans, LA Outbreak Update
On Tuesday, January 10, 2017 two suspect horses that had previously tested negative for EHV-1 on both nasal and blood samples retested positive for EHV1 non-neuropathogenic strain at the LA Animal Disease Diagnostic Lab (LADDL). One of the horses retested negative on blood but positive on nasal samples. The other was positive on both blood and nasal samples. Another new febrile horse from barn 30 tested positive for EHV1 non-neuropathogenic strain on both blood and nasal samples. All 3 horses have been placed into isolation and the barns are under quarantine. On January 12, 2017, a horse in Barn 20 spiked a temperature of 104 and test results on blood and nasal samples are reported negative and retesting protocols will be followed. Three barns were tested for future quarantine release on Wednesday and results are as follows: Nine (9) horses in Barn 36, nineteen (19) horses in Barn 14 and two (2) horses in the Receiving Barn have been reported positive for EHV1 non-neuropathogenic strain. To date, test results report that thirty-eight (38) horses tested positive for EHV1 non-neuropathogenic strain and two (2) tested positive for EHV1 neuropathogenic strain. Sixty-five (65) horses that were potentially exposed to EHV-1 in a receiving barn prior to January 2nd have been traced, isolated and are currently in the testing process. The entire premise of the Fair Grounds Racetrack was placed under quarantine with racing still allowed with barns not symptomatic or test positive. Louisiana Department of Agriculture & Forestry, USDA, and Racing Commission veterinarians continue to work with track personnel in responding to the incident at the Fair Grounds.
January 13, 2017 Strangles Union County, FL Confirmed case(s): Quarantine
On January 13, one premise in Union County, Florida was placed under quarantine for strangles after PCR results returned positive for 3 of the thirteen horses on the property. All three horses had recently performed at a roping event in Trenton, Florida over the New Year’s weekend. All horse owners that attended this event are encouraged to monitor their horses closely for signs of strangles, isolate febrile horses and report clinical signs to the Florida Department of Agriculture. Clinical signs for the three positive horses began January 5 and the case was reported to the state on January 12. No equids have left the facility since clinical signs began. This is the first case for Union County and Florida’s second case in 2017.
January 13, 2017 Equine Infectious Anemia Illinois, United States Confirmed case(s): Quarantine
Illinois State Veterinarian’s Office received positive EIA test results from a horse stabled in Northeast Illinois in mid-November. Prior to the results being returned, the horse was removed from the premises and has been lost to follow-up. USDA Investigative and Enforcement Services is involved in the case. The premises was quarantined. Additional testing of equine on the premises disclosed one additional positive animal. That animal has been euthanized. The remaining animals were negative for EIA.
January 12, 2017 Equine Herpes Viruses Kentucky, United States Information Only
There is not, nor has there been, any veterinary facility quarantined in association with the recent diagnosis of equine herpesvirus in KY.