Overview
- The Equine Disease Communication Center reports at least 29 neurological EHM cases across seven states connected to early November competitions in Waco.
- Texas authorities confirm 17 laboratory‑verified EHV‑1 cases across eight counties with two horse deaths, while additional suspected fatalities remain unconfirmed.
- Cases have been documented outside Texas, including four in Oklahoma; three each in Louisiana, New Mexico, and Arizona; two in Washington; and one each in South Dakota and Colorado.
- Colorado has one confirmed EHV‑1 case that developed neurological signs after testing positive on Nov. 20, with roughly 30–40 potentially exposed horses under quarantine.
- Event and venue responses include canceling the Billings, Montana, horse auction, postponing PRCA/WPRA breakaway and related Las Vegas events, pausing Fort Worth cattle drives, and enforcing temperature checks and isolation protocols at major competitions.