The third positive case of an equine contracting West Nile virus (WNV) was confirmed July 20 at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL). The case is in Denton County, in North Texas. The first two cases, confirmed earlier this year, were located in Limestone County and Erath County.
In 2015, TVMDL confirmed 40 Texas horses infected WNV and six cases of Eastern Equine Encephalitis (EEE). The positive cases were found from the Panhandle to Dallas, to South Texas and the Houston area. The most prolific area with positive cases was the southeastern region of the state. The common factor in each case was confirmation from the owner or veterinarian that the horse had not been vaccinated for these common neurologic diseases.
Vaccination for WNV and other neurologic diseases like Eastern and Western Equine Encephalitis is recommended. Additionally, Equine Herpesvirus-1 cases have been confirmed in several states in 2016; this neurologic disease has similar clinical signs as those diseases stated above.
TVMDL offers veterinarians diagnostic testing options to aid in diagnosing a horse that exhibits neurologic clinical signs.
- Equine Encephalitis Panel (WNV,EEE,WEE IgM-capture ELISA)
- West Nile Virus (qPCR or IgM Capture ELISA)
- Eastern Equine Encephalitis IgM (ELISA)
- Western Equine Encephalitis IgM (ELISA)
- Equine Herpesvirus-1 (qPCR)
For more information on TVMDL’s diagnostic services, visit tvmdl.tamu.edu.