Central Texas is grappling with an escalating outbreak of Equine Herpesvirus-1 (EHV-1), with the Equine Disease Communication Center (EDCC) reporting at least 23 confirmed cases linked to the Women’s Professional Rodeo Association (WPRA) World Finals and Elite Barrel Race, which were held in Waco from November 5 to 9. The virus, known for its severe impact on equine health, has also resulted in the euthanasia of two affected horses in Bell and Parker counties.
As of December 1, the reported cases comprise 18 instances of Equine Herpes Myeloencephalopathy (EHM), the neurological form of EHV-1, along with four cases showing no neurological symptoms, and one case with no clinical signs. This ongoing situation has heightened concerns among horse owners and veterinary professionals alike, with experts urging immediate reporting and intervention when symptoms arise.
Dr. Jared Janke, a clinical associate professor at Texas A&M College of Veterinary Medicine & Biomedical Sciences, emphasizes the need for vigilance among horse owners. He outlines several critical points regarding EHV-1 transmission and prevention. The virus can spread through direct contact, airborne particles, and indirectly via people or equipment. Its clinical manifestations range from respiratory issues to neurological disorders, with EHM posing the highest risk to affected horses.
Diagnosis is essential for managing suspected cases, according to Dr. Janke. A veterinarian can confirm an infection through nasal swabs and blood tests, typically returning results within one or two days. Owners are advised to act promptly to quarantine infected horses and mitigate the spread of the virus through monitored confinement or veterinary care.
Following the outbreak declaration on November 18, the Texas Animal Health Commission mandated a 14-day quarantine for horses that attended the Waco event. This quarantine period officially ended on December 2, but its effects are still seen in the cancellation of numerous equestrian events across the state during November and December as a precautionary measure.
In addition, the WPRA continues to provide updates regarding EHV-1’s impact on scheduled events. Specifically, Las Vegas Events and the Professional Rodeo Cowboys Association have announced new health protocols for the upcoming 2025 National Finals Rodeo (NFR) to protect against further spread, including mandatory temperature checks and enhanced biosecurity measures.
While the Nevada Department of Agriculture reported no active disease cases within the state, officials caution that large gatherings of horses during the event season pose increased risks. The convergence of equines can facilitate rapid disease transmission, underlining the need for equestrians to remain vigilant.
As horse owners prepare for forthcoming events, the emphasis remains on prevention and early intervention. Veterinary experts stress that keeping healthy horses isolated from potentially infected animals, along with stringent hygiene practices, is key to safeguarding equine health in the face of rising EHV-1 cases.