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For Immediate Release
Wednesday, May 25, 2011

UPDATED: Information Regarding Equine Herpesvirus (EHV-1) and Equine Herpesvirus Myeloencephalopathy (EHM)

Source: USEF

As of 12:00 PM EST on May 20, cases of Equine Herpesvirus Myeloencephalopathy (EHM) have been confirmed in eight states and in Canada. Please use the state veterinarian in your state as a resource for information and guidance regarding this disease.

Please see the USDA situation report for updated information:

Affected States'  State Veterinarian Contact Information:

Phone: (916) 654-1447

Phone: (303) 239-4161

Phone: (208) 332-8544

Phone: (503) 986-4680

New Mexico:
Phone: (505) 841-6161


Phone: (801) 538-7162

Phone: (360) 902-1881, (360) 902-1835

Additional Resources:

USDA situation report, guidance document & new AAEP resources for horse owners now available:

The USDA:APHIS:VS has recently posted on its website 2011 EHV-1/EHM incident information, including situation reports (listings of suspect and confirmed cases, locations, etc…), recommendations for exposed horses and more here: Please check this website weekly for updated situation reports.

In addition, the AAEP now has an updated web page for horse owners with a very informative FAQ targeted for horse owners located here:

American Horse Council:

The USEF has also received a number of inquiries about the protocol in Kentucky (a non-affected state), please visit this website for more information:

Please refer back to these resources frequently to ensure you have the most current information.

Founded in 1973, the United States Dressage Federation is a nonprofit membership organization dedicated to education, recognition of achievement, and promotion of dressage. For more information about USDF membership or programs, visit, e-mail, or call (859) 971-2277.