Equine Herpesvirus-1 (EHV-1) Update May 27, 2025

May 27, 2025

AUSTIN - The Texas Animal Health Commission (TAHC) has one confirmed case of the neurologic form of EHV-1 to report today. Preliminary investigation indicates no connection to the Ogden, Utah NCHA event. A Quarter Horse racehorse stabled in Ector County, TX displayed neurologic symptoms consistent with the disease, and ultimately tested positive for EHV-1. All horses on the premises are under quarantine and will be managed according to USDA recommendations for confirmed cases. Additional information is being gathered to determine if any other horses were exposed.

Regarding the Ogden, UT event, there are currently 12 known horses in Texas that attended the event and 174 cohorts (stablemates) remaining under movement restrictions. There are now a total of 8 premises that have been exposed and those premises are in the following counties: Randall, Parker, Jack, Kerr and Mills counties.

Horse owners should contact event organizers in advance to ensure that scheduled events have not been cancelled. Some other states have established emergency rules for entry as a result of this situation. A list of contact information for all 50 state animal health agencies can be found on the U.S. Animal Association website at http://www.usaha.org/Reference/FederalStateAnimalHealth.aspx or on the USDA website at http://www.aphis.usda.gov/import_export/animals/animal_import/animal_imports_states.shtml

The May 26 EHV-1 nationwide situation reported compiled by USDA can be viewed at http://www.aphis.usda.gov/vs/nahss/equine/ehv/ehv_2011_sitrep_052611.pdf USDA’s report shows cumulative data submitted from all involved states. TAHC’s daily updates report the current in-state data.

For information regarding EHV-1, visit www.tahc.state.tx.us . You can also keep up with EHV-1 information through our Facebook (www.facebook.com/TexasAHC ) and Twitter (www.twitter.com/TAHC ) sites.

*Note* To be consistent with reports from the United States Department of Agriculture (USDA) and other states, the TAHC is following USDA guidelines for clinical and suspect cases which have very specific criteria to meet the case definition. Currently “suspect” and “confirmed” cases will be the two types of cases that the TAHC reports. The following USDA link outlines the specific definition for what is classified as a “suspect” and/or “confirmed” case: http://www.aphis.usda.gov/vs/nahss/equine/ehv/ehv_ehm_recommendations_051611.pdf

Yvonne “Bonnie” Ramirez
Director of Public Information (Texas Animal Health Commission)
“Serving Texas Animal Agriculture Since 1893″
2105 Kramer Lane Austin, Texas 78758
Office 512.719.0710 Email [email protected] Web http://www.tahc.state.tx.us
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Written by HJN Staff Reporter · Filed Under Press Releases
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