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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 07, 2018
West Nile Virus
Davie County, NC
Confirmed Case(s): No Quarantine
Source: North Carolina Department of Agriculture and Consumer Services

The North Carolina Department of Agriculture and Consumer Services confirmed West Nile Virus (WNV) in an unvaccinated horse in Davie County. 

November 07, 2018
Strangles
Stevens County, WA
Confirmed Case(s): Voluntary Quarantine
Source: Washington Department of Agriculture

The Washington Department of Agriculture received confirmation of Strangles in 2 horses testing positive by culture. Owner had placed in quarantine when brought to property in Stevens County and noticed nasal discharge. Animals have recovered.

November 07, 2018
Equine Herpes Viruses
San Mateo County, CA
Confirmed case(s): Official Quarantine
Source: California Department of Food and Agriculture

November 7, 2018: The California Department of Food and Agriculture confirmed Equine Herpesvirus Myeloencephalopathy (EHM) in a 24-year old Arabian mare. The mare, originating from a San Mateo County facility, was displaying neurologic signs and was vaccinated. The mare was removed from the property and placed in isolation and quarantined. CDFA is investigating to identify exposed horses which will be monitored for clinical signs and temperatures taken twice daily. Any horse displaying a fever or compatible clinical signs will be tested. CDFA will continue to monitor the situation and post new information as it becomes available.

November 07, 2018
Equine Infectious Anemia
Municipality of Bonnyville, AB
Confirmed case(s): Official Quarantine
Source: Canadian Animal Health Surveillance System

On November 2, 2018, a positive EIA result was confirmed by the CFIA’s national reference laboratory for a horse on a premises in the municipal district of Bonnyville, Alberta. The horse had been sampled by an accredited veterinarian to comply with U.S. import conditions. No clinical signs of disease were noted at the time of sampling. A CFIA investigation is underway and as per program policy, a quarantine has been placed on the infected animal and its on-premises contact animals. Initial reports indicate that there are several equines on the affected premises. The quarantine will remain until all disease response activities have been completed, including follow-up testing and ordering the destruction of positive cases. Trace-out activities may require the CFIA to undertake actions at additional premises as outlined in the current program policy. 

 

November 07, 2018
West Nile Virus
Sacramento County, CA
Confirmed Case(s): No Quarantine
Source: The California Department of Food and Agriculture

On November 2, 2018, the California Department of Food and Agriculture confirmed its 11th equine West Nile Virus case for 2018. The case was a 1 year old Grade mare in Sacramento county with unknown vaccination history, displaying neurologic signs. The mare was euthanized due to severity of clinical signs. For 2018, a total of eleven (11) horses have been confirmed positive for West Nile Virus. The positive horses were located in Amador, Kern, Merced (2), Placer, Sacramento (3), San Joaquin, Shasta and Stanislaus counties. Five (5) horses were unvaccinated, three (3) horses had an unknown vaccine history, and three (3) horses were vaccinated. Six (6) horses died or were euthanized and five (5) horses are alive. For more information on California equine WNV cases for 2018 visit https://www.cdfa.ca.gov/ahfss/Animal_Health/WNV_Info.html

November 06, 2018
West Nile Virus
Warren County, TN
Confirmed Case(s): No Quarantine
Source: Office of the Tennessee State Veterinarian

The Office of the Tennessee State Veterinarian has reported a confirmed case of equine West Nile virus. An 8-year-old Tennessee Walking Horse mare in Warren County was confirmed positive on November 1st, 2018 by IgM ELISA. The vaccination status of the horse is unknown.

November 06, 2018
Equine Infectious Anemia
Weld County, CO
Confirmed case(s): Official Quarantine
Source: Colorado State Veterinarian’s Office

The Colorado Department of Agriculture’s, State Veterinarian’s Office, has been notified that a third Colorado horse has tested positive for Equine Infectious Anemia (EIA). The investigation is ongoing but appears to be unrelated to the prior two cases of EIA in Colorado this year. After initial test results were received, confirmatory testing was completed at the National Veterinary Services Laboratory (NVSL) in Ames, IA on November 2, 2018. The horse was tested at a veterinary clinic in Weld County as part of a pre-purchase examination under the buyer’s name. This horse allegedly participated in unsanctioned horse races. The investigation into the current location of the horse is ongoing.

November 06, 2018
Equine Infectious Anemia
Wyoming, United States
Quarantine Released
Source: Wyoming Livestock Board

The Wyoming Livestock Board, after completing the 60 day post exposure tests on 61 equine on 12 premises in 8 counties with all negative results has released all quarantines associated with Equine Infectious Anemia in the state.  These quarantines were the result of exposure of the equines to a Colorado horse which was later discovered to be positive for the disease.

November 05, 2018
West Nile Virus
Sullivan, Washington, Cumberland, Jefferson, Knox, Rutherford, McMinn, and Warren Counties, TN
Confirmed Case(s): No Quarantine
Source: Office of the Tennessee State Veterinarian

The Office of the Tennessee State Veterinarian has reported six confirmed cases of equine West Nile virus. A 10-year-old Quarter Horse gelding in Sullivan County was confirmed positive on September 27th, 2018 by IgG/IgM ELISA. A 14-year-old Quarter Horse gelding in Washington County was confirmed positive on October 19th by IgG/IgM ELISA. A Tennessee Walking Horse gelding in Washington County was confirmed positive on October 23rd by IgG/IgM ELISA. A 4-year-old Thoroughbred mare in Cumberland County was confirmed positive on October 27th by IgG/IgM ELISA. A horse in Jefferson County was confirmed positive on October 25th by IgM ELISA. A horse in Knox County was confirmed positive on October 26th by IgM ELISA. A 9-year-old Tennessee Walking Horse mare in Rutherford County was confirmed positive on October 25th on PCR. A 7-year-old mixed breed gelding in McMinn County was confirmed positive on October 24th by IgM ELISA. A 3-year-old pony mare in Warren County was confirmed positive on August 31st by IgM ELISA. The vaccination status of all of the horses is unknown.

November 04, 2018
West Nile Virus
Aiken County, SC
Confirmed Case(s): No Quarantine
Source: South Carolina State Veterinarian's Office

 The South Carolina State Veterinarian’s office has received laboratory confirmation for the fourth case of West Nile Virus in SC in 2018 in Aiken County. It is the first case for Aiken County this year. The case was a 6 year old Thoroughbred gelding that had been vaccinated approximately 10 months ago. The horse is currently quarantined and recovering.