Vesicular Stomatitis – Suspected Case in Grand County


The Kremmling CSU Extension Office has issued a warning about a suspected case of vesicular stomatitis virus (vsv) in a horse in Grand County. This horse recently attended an equine event in Fraser. The case has not been confirmed with blood work as of today, August 2, but is extremely suspect. 

Vesicular stomatitis is a virus and good hygiene practices are important. This includes not sharing water buckets, feed tubs and tack and being aware of healthy sanitation practices.

According to 4-H program coordinator Lacy Stovner in an email to 4-H members heading to fair this week, 

“At this time we plan to continue with our fair events until we receive confirmation and hear from the state vet. We ask that everyone learns about the disease and how to best prevent it. Strict biosecurity measures should be taken, i.e. don’t let your horse make contact with another person’s horse at an event, don’t share water buckets or hay bags, don’t share bits between horses, etc. VS is known to be spread by flies, so use your fly spray liberally. Keep in mind that stress can trigger an outbreak, so you should carefully consider whether to bring your horses to events. We encourage you to communicate with your own vets as well.”

She added, “If the case is confirmed, there could be a ‘no travel order’ placed on horses that may have been in contact with the suspect case.”

Stovner assures 4-H members who may not want to take the risk of exposing their equines to the virus the CSU Extension Office would work with them to complete their projects. She mentioned vsv can be contacted by other species but is not a concern at this time. According to the Colorado Department of Agriculture website there has been one confirmed case of vsv in a bovine.

Colorado is among five states in the country to have a confirmed case of vesicular stomatitis virus (VSV), according to an announcement from the Colorado Department of Agriculture. It is currently in 14 Colorado counties.

Other states affected have been Texas, New Mexico Oklahoma and Wyoming. 

For more information about the disease visit these websites.