People bringing horses into Wyoming have three days to get their horsed checked by a veterinarian. The Wyoming Livestock Board ordered the 72-hour requirement effective beginning Thursday.

Need certificate starting May 19th:

According to the Associated Press, the livestock board ordered the certificates of veterinary inspection in response to a fatal virus that's infected horses in some western states but not in Wyoming.

The certificate must include the temperature recorded for each horse listed. The livestock board says the action is being taken to protect the state's horse industry.

The order will be in effect until is rescinded by the state veterinarian.

Equine herpes virus-1 is easily spread because it can be airborne and transmitted by touch or through sharing brushes, bits or other equipment. It doesn't pose a risk to humans.

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