On January 8, 2014, the Arizona Department of Agriculture announced vesicular stomatitis was diagnosed in two horses living in Santa Cruz County, Arizona. This viral disease causes painful blisters and ulcers on the mouth, nose and tongue of horses. In cattle, it also affects the hooves and udder. The virus may infect people causing flu-like symptoms. Treatment is symptomatic and animals are quarantined until the ulcerations have healed. Currently, there are no USDA approved vaccines available.
Besides causing economic loss, Vesicular Stomatitis Virus (VSV) is also important because the clinical signs are similar to more well known Foot and Mouth Disease of cattle. Therefore, all suspected cases must be reported to the appropriate governmental agencies.
-Arizona Department of Agriculture, Three Santa Cruz County Properties Quarantined Due to Contagious Virus: Positive Diagnosis of Vesicular Stomatitis Virus in 2 Horses. Arizona Department of Agriculture News Release, January 8, 2015.