United States Eventing Association

USDA has released the third national EHV-1 situation report. USDA will continue to release EHV-1 Situation Reports on a weekly basis. Once there are no new exposed premises with suspect or confirmed EHV/EHM cases, USDA will continue to issue Situation Reports for several weeks to ensure there is no further transmission from the current EHV-1 incident. A summary of the updated information is as follows:

Summary Information on Current Situation (as of 06/01/2011):

• A total of 84 confirmed EHV-1 or EHM cases have been reported in 10 states (AZ, CA, CO, ID, NM, NV, OK, OR, UT, WA)
• Of the 84 confirmed EHV/EHM cases, 58 cases are horses that were at the Ogden, Utah event.
• There are 12 horses associated with this incident that are dead or have been euthanized.
• There are 2 newly identified premises with suspect or confirmed cases identified this reporting period.

Hopefully, the number of new exposed premises with suspect or confirmed EHV/EHM cases will begin to decline as response, control, and disease mitigation strategies begin to take hold. But out of an abundance of caution, we continue to ask all horse owners and organizations to maintain a measured and informed response along with responsible ownership practices to further mitigate the economic and health implications of this current outbreak.

The complete USDA EHV-1 Situation Report is attached and provides detailed information on the number of exposed, positive, dead, and euthanized horses on a state by state level. The AHC anticipates USDA releasing another national situation report at the end of next week. Please see the below links for additional information on EHV-1 transmission risks and disease mitigation strategies.

Additional Resources

USDA-APHIS website:

EHV information sheets, color brochures, historical information, a review of disease mitigation strategies, and an EHV-1 guidance document (which will be available later today) "Recommendations for Horses Exposed to EHV-1 or EHM" can be found on the USDA-APHIS website at the following link: http://www.aphis.usda.gov/vs/nahss/equine/ehv/

AAEP website:

General EHV resources through the American Association of Equine Practitioners:
http://www.aaep.org/EHV_resourcesowner.htm.

Neurologic Disease Guidelines: http://www.aaep.org/pdfs/control_guidelines/Neurologic%20Disease%20Guidelines.pdf

Equine Herpes Virus: http://www.aaep.org/images/files/EquineHerpesvirusGuidelines051711.pdf

Biosecurity Guidelines: http://www.aaep.org/pdfs/control_guidelines/Biosecurity_instructions%201.pdf

Biosecurity Instructions for Caretakers - English & Spanish:
http://www.aaep.org/pdfs/control_guidelines/Instructions%20to%20grooms.pdf

National Cutting Horse Association (NCHA) website:

For history of the current outbreak and additional outreach materials: http://www.nchacutting.com/

ACVIM Consensus Statement on EHV-1: http://onlinelibrary.wiley.com/doi/10.1111/j.1939-1676.2009.0304.x/pdf