Published: Jun 28, 2011 6:44 PM EDT
Updated: Jun 28, 2011 6:44 PM EDT

CHEYENNE, Wyo. (AP) - The Wyoming Livestock Board has determined that the risk of a potentially fatal horse virus outbreak has receded.

That determination was made even though the state's first case of the virus this year showed up last week and led to the death of one horse.

State veterinarians explain that the case in Johnson County is unrelated to the outbreak of Equine Herpes Virus-1 that began in Ogden, Utah, because of the remoteness of the ranch and the horses have not traveled. The ranch has been quarantined.

On Monday, the Livestock Board rescinded special inspection rules for horses entering the state that it had imposed in May because of concern about the Ogden virus outbreak. The outbreak led to cancelations and postponements of horse events throughout the nation.

(Copyright 2011 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)