The Colorado State University Veterinary Diagnostic Laboratory has notified Colorado Department of Agriculture’s State Veterinarian’s Office that the horse which was showing signs consistent with Equine Herpes earlier this week tested positive for the disease. The horse was euthanized due to complications from the ailment. A second horse that resided with the infected horse has developed a fever and is considered a suspect case but is not displaying any neurologic signs at this time. This second horse attended some of the same events within the rodeo/barrel racing circuit as the original horse. Because of these developments and the recent history of other EHV-1 cases in other states, the State Veterinarian’s Office in Colorado recommends that equine event organizers and horse owners competing in the rodeo/barrel racing circuit exercise extreme caution with regards to the planning and holding of equine events.