As of November 22, 2025, the Equine Disease Communication Center (EDCC) has confirmed 27 EHV-1/EHM cases across the United States linked to the Women’s Professional Rodeo Association (WPRA) World Finals and Elite Barrel Race event that took place in Waco Texas on November 5-9.

How many confirmed cases (with or without clinical signs) will there be by December 31?

Resolves based on the total confirmed EHV-1/EHM cases reported by EDCC at https://www.equinediseasecc.org/news/article/Equine-Herpesvirus-Myeloencephalopathy-(EHM)-Outbreak as of the last update on December 31.

EHM Outbreak Counts | Equine Disease Communication Center