Vesicular Stomatitis Virus (VSV)

On June 16, 2020, the Kansas Department of Agriculture confirmed a finding of vesicular stomatitis virus (VSV) in horses in Butler County, Kansas. With that finding, Kansas became the fourth state in the U.S. to have confirmed cases of VSV this year, following New Mexico, Arizona and Texas. 

Current Status: VSV has now been confirmed on 42 premises in Butler, Cowley, Greenwood, Marion, Sedgwick, and Sumner counties. Details can be found in the situation report at the bottom of this page.

KDA has actively responded to more than 100 other premises in the area with animals showing clinical signs consistent with VSV; we are awaiting laboratory test results. All infected premises are placed on quarantine for a minimum of 14 days from the date of the last diagnosis.

What is VSV? VSV is a viral disease that primarily affects horses, also cattle and occasionally swine, sheep, goats, llamas, and alpacas. Although humans can also become infected with the disease when handling affected animals, resulting in flu-like symptoms, this is a rare event. Vesicular stomatitis is known to be an endemic disease in the warmer regions of North, Central, and South America, and outbreaks of the disease in other temperate geographic parts of the hemisphere occur sporadically. The Southwestern and Western United States have experienced a number of vesicular stomatitis outbreaks, including a significant outbreak in 2015. Outbreaks usually occur during the warmer months, often along waterways. VSV is a state reportable disease. VSV was last isolated in the U.S. during the 2019 VSV outbreak, when eight states including Kansas reported confirmed VSV cases.

A full situation report from the U.S. Department of Agriculture Animal and Plant Health Inspection Service can be accessed at the link below. 

News Release Updating Status of Continued Spread of VSV in Kansas dated June 30, 2020
News Release Confirming Vesicular Stomatitis in Kansas dated June 17, 2020

VSV: Symptoms & Prevention in Horses
VSV: Symptoms & Prevention in Cattle

Vesicular Stomatitis Information

  • Vesicular stomatitis clinical signs

  • What should I do if I see symptoms?

  • Vesicular stomatitis treatment

  • What should horse and livestock owners do to protect their animals?

  • How is vesicular stomatitis transmitted?

  • Are humans susceptible to VSV?

  • Health certificates for interstate travel

  • Information for the Veterinarian

  • Will this impact horse shows, rodeos, other gatherings and events?

June 2020 Webinar

We partnered with K-State Research and Extension in Butler County to host an educational webinar about VSV. A recording of the webinar as well as the slide presentations shared at that webinar can be reviewed here:
KSRE-Butler County YouTube Recording of Webinar.
Kansas Vesicular Stomatitis by Dr. Justin Smith, Kansas Animal Health Commissioner, KDA
External Parasite Control in Livestock by A.J. Tarpoff, Beef Extension Veterinarian at K-State

VSV Resources

Kansas Situation Report

County  Number Of Confirmed Premises Number Of Suspect & Pending Premises* Number of Premises Under Quarantine Number of Premises Released from Quarantine 
 Butler 14 20
 Cowley 3
6 3
 Greenwood 1 2

 Marion 1 1

 Sedgwick 3
2 4
57  31

Last updated 7/7/2020, 11:00 a.m.
These numbers will be updated between 9:00 a.m. and noon daily, if an update is available.
*Once a county is confirmed as VSV-positive, new equine premises presenting with clinical signs of VSV in that county are not required to be tested for confirmation of the disease, but the premises will be quarantined and classified as a suspect premises. The pending premises classification indicates the premises is awaiting laboratory confirmation.