Last updated: 11/24/2025
The risk posed by Equine Herpesvirus (EHV), particularly the neurologic form Equine Herpes Myeloencephalopathy (EHM), continues to evolve across the U.S. Below is a curated list of the most recent articles covering outbreaks, event cancellations, state health alerts, and what horse owners and veterinary professionals need to know. We will keep this list updated with new developments.
EDCC Disease Alerts
- EDCC Diease Alerts - Updates on current disease outbreaks
- EDCC EHM Outbreak Info - List of confirmed cases
Recent News Articles
- Texas horse virus outbreak prompts closures — Houston Chronicle: Details on arena closures and event disruptions in Texas.
- EHV horse‐virus outbreak 2025 — MySanAntonio.com: Coverage of the outbreak origin and impact around San Antonio.
- Equine Herpesvirus Myeloencephalopathy (EHM) outbreak — The FencePost: Analysis of EHM cases and implications for equine movement.
- Animal health alert announced for Kansas due to scattered nationwide spread of EHM — KVOE.com: Kansas animal health alert amid national spread.
- EHV-outbreak: Equine world on hold as disease hits Oklahoma — KJRH News: Oklahoma’s response as event activity is paused.
- ND horse owners warned – Herpesvirus exposure OK-TX rodeo events — ValleyNewsLive.com: Warnings for horse owners in North Dakota tied to events in Oklahoma/Texas.
- EHV-1/EHM outbreak in horses: What you should know — Ohio’s Country Journal: A practical overview of the outbreak, key clinical signs, and steps to take.
- EHV-1 Outbreak Linked to Texas WPRA Event Prompts Multi-State Biosecurity Measures - Horse Nation: Overview of outbreak, info about EHV.
- EHV-1 Outbreak 2025: What Horse Owners Need to Know and How to Protect Your Horse - Progressive Farmer: What horse owners need to know about the outbreak.
- ‘Particularly Aggressive’ EHV-1 Outbreak Ripples Through Horse World - The Chronicle of the Horse: Outbreak overview and additional information.
- EHV-1 Update And Biosecurity Reminders From US Equestrian - USEF: EHV-1 outbreak update and reminders for competition managers.
- Risk Mitigation Following a Multistate Equine Herpes Myeloencephalopathy (EHM) Outbreak - Arizona Farm Bureau: Information Provided by the AZ Department of Agriculture.
- Commissioner Miller Alerts Texas Equine Industry of EHV-1 Outbreak - Texas Department of Agriculture: Outbreak information from Commissioner Sid Miller.
- Stopping The Spread Of EHV-1: Five Things To Know About Equine Herpesvirus - Texas A&M University Veterinary Medicine: Info about EHV.
- EHV Outbreak in Texas. Symptoms, What You Can Do - Horse & Rider: What to know about EHV as the outbreak develops.
- EHV-1 Outbreak Expands: New Cases Confirmed, Widespread Event Cancellations Across U.S. - The Horse Review: Outbreak updates, EHV symptoms, prevention, and treatment.
- Understanding the recent equine herpesvirus (EHV) outbreak - University of Missouri College of Veterinary Medicine: What horse owners need to know about the EHV outbreak.
- Horse Illness Noticed After Texas Event - Progressive Farmer: EHV outbreak information.
What to Keep an Eye On
- New state or federal animal health alerts, including movement restrictions or quarantine requirements.
- Reports of additional EHM neurologic cases, which elevate the outbreak risk.
- Emerging guidance around event participation, especially for high-movement disciplines (rodeo, barrel racing, sales).
- Updates on vaccine advisories, diagnostic protocols, and changes to health certificate/travel requirements in response to the outbreak.
What This Means for Veterinary Clinics
As your partner in compliance, we encourage clinics to stay proactive by:
- Monitoring these news sources and subscribing to state animal health bulletins.
- Ensuring clinic staff are ready to answer client questions about EHV/EHM, travel risks, and biosecurity.
- Being prepared to issue health certificates with up-to-date compliance, given the changing movement rules.
- Communicating early and clearly with horse-owner clients, especially those who travel or compete.
We’ll continue to update this page as more articles and alerts become available. If you’re aware of news not yet listed—or want to see a specific jurisdiction’s alert posted—please let us know and we’ll add it promptly.
Questions?
If you have specific questions about this suspension or need guidance on alternative documentation, please contact your state veterinarian's office.
Thank you for your cooperation and vigilance in protecting equine health during this outbreak.