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.
The North Carolina Department of Agriculture and Consumer Services has reported a confirmed case of equine West Nile virus. The horse resided in Johnston County. This is the fourth confirmed case of equine WNV in NC in 2018.
The Kentucky Department of Agriculture confirmed West Nile Virus (WNV) in Logan County. On November 7, 2018 the 7-year old unvaccinated Percheron gelding had rear limb ataxia and muscle fasciculations. As of November 14th the horse is reported improved with a favorable prognosis. This 17th case of WNV in Kentucky in 2018.
The Michigan Department of Agriculture and Rural Development has confirmed a case of strangles in a three-year-old filly pony from Livingston County. The pony developed a fever and nasal discharge on November 1st, 2018. The pony is currently receiving treatment. It is unknown if it was vaccinated against strangles. No quarantines were issued. This case bring the total number of confirmed 2018 strangles cases in Michigan to 19.
As of November 7, 2018 the Ohio Department of Agriculture has confirmed West Nile Virus (WNV) in two horses. a 7-year-old Jenny from Medina County. On 10/16/2018 the donkey was lame in its hind legs. A serum sample sent to National Veterinary Services Laboratory (NVSL), had an IgM capture ELISA positive at 1.400, suggesting recent exposure to West Nile Virus. The donkey was not vaccinated WNV and is alive and recovering as of 10/26/2018. This is the forty-ninth positive WNV case in Ohio in 2018.The fiftieth positive horse was an adult Belgian mare from Wyandot County. On 10/25/2018 the owner found his horse down and unable to rise. The veterinarian observed muscle fasciculations of the face and neck as well as a temperature of 102°F. Treatment was attempted but due to the prognosis the owner elected euthanasia. The serum sample sent to Cornell University, had an IgM capture ELISA of 16.60 (>3.3=Positive), suggesting recent exposure to West Nile Virus. The horse was not vaccinated against West Nile Virus.
The North Carolina Department of Agriculture and Consumer Services confirmed West Nile Virus (WNV) in an unvaccinated horse in Davie County.
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 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.
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.
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/
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.