11/19/2025
π¨ EHV OUTBREAK π¨
An aggressive Equine Herpesvirus-1 (EHV-1) outbreak has been confirmed in Texas as of November 2025, with multiple cases linked to recent events in Waco. The strain has reportedly caused several fatalities and neurological disease (Equine Herpes Myeloencephalopathy or EHM) in some horses.
Outbreak Details
Confirmed Cases: Multiple equine veterinary clinics have confirmed cases of EHV-1.
Source: Cases have been traced to horses that attended major events in Waco, Texas, including the WPRA World Finals and Elite Barrel Race, held November 5β9, 2025.
Severity: The current strain is described as highly aggressive, rapidly spreading, and fatal in some instances, with some horses deteriorating quickly without prior symptoms like fever.
Response: Event organizers are working closely with the Texas Animal Health Commission (TAHC) to investigate and implement biosecurity measures. Some upcoming events in the state have been canceled or postponed as a precaution.
Symptoms of EHV-1
Symptoms can vary, and some horses may show no outward signs. Common signs include:
Fever (often the earliest sign, >101.5Β°F or 38.6Β°C)
Nasal discharge and cough
Depression/lethargy
Enlarged lymph nodes
Neurological signs (EHM): Hind-limb weakness or incoordination (ataxia), stumbling, difficulty urinating, and in severe cases, inability to rise.
Abortion in pregnant mares.
Recommendations for Horse Owners
Veterinarians and health organizations urge all horse owners, especially those whose horses attended large events in Texas recently, to take immediate precautions:
Monitor Horses: Take your horse's temperature twice daily and monitor for any clinical signs. A temperature of 101.5Β°F or higher should be reported immediately to a veterinarian.
Implement Strict Biosecurity:
Avoid unnecessary travel and keep horses at home if possible.
Minimize horse-to-horse contact.
Do not share equipment, including feed tubs, water buckets, grooming tools, or tack.
Wash hands or use hand sanitizer between handling different horses.
Disinfect surfaces, boots, and clothing daily after barn use.
Contact a Veterinarian: If you have concerns or notice any symptoms, contact your private veterinarian immediately.
Stay Informed: Monitor official updates from the Equine Disease Communication Center (EDCC) and the Texas Animal Health Commission.
https://www.equinediseasecc.org/
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