Vesicular Stomatitis

On April 13, 2020, the National Veterinary Services Laboratories (NVSL) in Ames, Iowa, confirmed a finding of vesicular stomatitis virus (VSV) infection (Indiana serotype) on an equine premises in Dona Ana County, New Mexico. VSV-Indiana serotype was last isolated in the U.S. during the 2019 VSV outbreak. A single horse on the index premises has met the case definition of infection with compatible clinical signs and virus isolation positive results. A second equine premises in Sierra County, New Mexico subsequently met confirmed VSV case definition with compatible clinical signs and reverse transcription-polymerase chain reaction (RT-PCR)-positive results for VSV (Indiana serotype). This is the 2020 VSV index case for the United States and subsequent VSV case for New Mexico. 

Vesicular stomatitis virus (VSV) was confirmed in Kansas on October 23, 2019 after tests from horses in Sherman County were reported positive from the National Veterinary Services Laboratory. KDA quarantined the infected premises, which is a private residence. Kansas was the eighth state with confirmed VSV in 2019.

VSV is a viral disease that primarily affects horses and cattle and occasionally swine, sheep, goats, llamas, and alpacas. Humans can also become infected with the disease when handling affected animals, resulting in flu-like symptoms, but 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. The time from exposure to the onset of clinical signs is 2-8 days. VS is a state reportable disease.

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 regarding confirmed VSV in Kansas  dated Oct. 24, 2019

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

Vesicular Stomatitis Information

  • Vesicular stomatitis clinical signs

  • Actions to take if you suspect infection

  • Vesicular stomatitis treatment

  • Vesicular stomatitis prevention

  • Vesicular stomatitis transmission

  • Are humans susceptible to VSV?

  • Health certificates for interstate travel

  • Information for the Veterinarian

Additional Resources