On November 19, 2025 the Oregon Department of Agriculture issued emergency rules to mitigate the risk of transmission of Equine Herpesvirus (EHV) at exhibitions. The purpose of the rules is to prevent the introduction of EHV into an exhibition, while also providing a framework to mitigate the risk of transmission between animals if EHV is introduced.
These rules apply only to exhibitions where horses or other equines will be present.
General Exhibition Requirements
Registration & Recordkeeping
Exhibitions where horses or other equines will be present must register with ODA at least 20 days prior to animals arriving at the exhibition (registration form included below).
Exhibition organizers will be required to collect and retain records of animals and exhibitors for 90 days following the exhibition. Records will only need to be made available to ODA in the case of a disease outbreak.
General Health Requirements
Exhibitions will be required to consult with a licensed veterinarians during the planning of the exhibition to ensure that protocols are in place to address animals that become sick during the exhibition, and exhibitions must have at least one veterinarian of record that is available to provide veterinary services during the exhibition.
Animals showing potential signs of infectious, contagious, or communicable diseases will not be allowed entry to exhibitions. Exhibitions must have a plan in place to isolate animals that develop potential signs of infectious, contagious, or communicable diseases during the exhibition until they can be examined by a veterinarian.
Registered Exhibitions
The following exhibitions have submitted registrations to ODA.
Resources
ODA Resources
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Exhibition Registration Form
Registration form for fairs and exhibitions that will include horses or other equines.
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Fair Handwashing Posters —
English, Español
Posters adapted for optional use by exhibitions to meet the signage requirements in the 2024 exhibition emergency rules.
Other State Resources
Other Resources
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CDC Exhibition Resources
Resources provided by CDC for disease prevention, including signs for use at exhibitions warning of risks posed by animal exposure and recommending handwashing.