Colorado VS: 91 Premises in 11 Counties Quarantined

Officials said this outbreak is not contained to one specific area of the state and urged horse owners to take caution.

No account yet? Register


As of Aug. 19, the Colorado Department of Agriculture’s (CDA) state veterinarian’s office has 91 locations in 11 counties under quarantine after horses, mules, and cattle herds tested positive for vesicular stomatitis (VS).

County Number of Currently Quarantined Premises Number of Quarantines Released
Archuleta 4 2
Chaffee 0 1
Conejos 2 0
Delta 16 4
Gunnison 1 0
Jefferson 1 0
La Plata 6 0
Larimer 23 5
Mesa 11 0
Montezuma 5 1
Montrose 17 0
Weld 5 0
Totals 91 19

“This outbreak is not contained to one specific area of the state,” said State Veterinarian Keith Roehr, DVM. “I encourage all livestock owners to be aware of their county status and take the proper precautions to prevent insect populations on their property.”

A 2014 outbreak of VS created 556 livestock investigations in Colorado resulting in 370 quarantines with the final quarantines released in January 2015.

A number of species are susceptible to VS, including horses, mules, cattle, bison, sheep, goats, pigs, and camelids. The clinical signs of the disease include vesicles, erosions, and sloughing of the skin on the muzzle, tongue, and teats and above the hooves of susceptible livestock. Vesicles are usually only seen early in the course of the disease

Create a free account with to view this content. is home to thousands of free articles about horse health care. In order to access some of our exclusive free content, you must be signed into

Start your free account today!

Already have an account?
and continue reading.


Written by:

Related Articles

Stay on top of the most recent Horse Health news with

FREE weekly newsletters from

Sponsored Content

Weekly Poll

sponsored by:

When do you vaccinate your horse?
292 votes · 292 answers

Readers’ Most Popular

Sign In

Don’t have an account? Register for a FREE account here.

Need to update your account?

You need to be logged in to fill out this form

Create a free account with!