Venezuelan equine encephalitis. , eastern equine Classification of the causative agent Venezuelan equine encephalomyelitis (VEE) viruses are taxonomically classified within the genus Alphavirus of the family Togaviridae (formerly the Group A arboviruses). Outbreaks frequently involve both equines – including horses, donkeys, mules, zebras – and humans. Within subtype I there are five antigenic variants (variants AB–F). ucdavis. g. [1] Sporadic epidemic outbreaks occur most commonly in Central and South America Summary Venezuelan Equine Encephalitis (VEE) is caused by the arbovirus Venezuelan Equine Encephalitis Virus (arthropod-borne virus). VEEV, along with EEEV and WEEV, are alphaviruses in the family Togaviridae. The geographic distribution of… Nov 3, 2024 · Encephalitis, an inflammation of the brain parenchyma, presents as diffuse and/or focal neuropsychological dysfunction. In both, these infections are Venezuelan equine encephalitis (VEE) is an emerging infectious disease in Latin America. VEEV subtypes IAB and IC can cause explosive, large-scale epizootics in horses and spillover epidemics in humans (3, 4). Although it primarily involves the brain, the meninges are frequently involved (meningoencephalitis). In the United States, epizootic VEE is a foreign animal disease that was last reported in Texas in 1971. [1][2] Outbreaks may range over a large geographic area and may last for several months to years. Etiology Eastern, western and Venezuelan equine encephalomyelitis, as they are traditionally called in the veterinary literature, are caused by the respectively named viruses in the genus Alphavirus, family Togaviridae. Outbreaks have been recorded for decades in countries with enzootic circulation, and the recent implementation of surveillance systems has allowed the detection Jul 3, 2023 · Venezuelan Equine Encephalitis Virus (VEEV) is the causative viral pathogen of Venezuelan Equine Encephalitis (VEE). Sep 30, 2024 · Venezuelan equine encephalitis virus (VEEV) is widely distributed throughout the Americas; at least 14 subtypes and varieties have been described (2). Outbreaks may range over a large geographic area and may last for several months to … Jan 1, 2024 · Venezuelan Equine Encephalitis (VEE) is caused by the arbovirus Venezuelan Equine Encephalitis Virus (arthropod-borne virus). vetmed. VEE can affect all equine species, such as horses, donkeys, and zebras. edu Learn about VEE, a mosquito-borne viral disease that affects horses and humans. Find out the clinical signs, diagnosis, treatment and prevention of this potentially fatal infection. Jul 30, 2025 · Learn about the three types of equine encephalitis viruses: Eastern, Western, and Venezuelan. Originally, subtypes The equine encephalitis viruses, Venezuelan (VEEV), East (EEEV) and West (WEEV), belong to the genus alphavirus, family Togaviridae and still represent a threat for human and animal public health in the Americas. Jul 3, 2023 · Venezuelan Equine Encephalitis Virus (VEEV) is the causative viral pathogen of Venezuelan Equine Encephalitis (VEE). The VEE complex of viruses includes six antigenic subtypes (I–VI) divided by antigenic variants. Find out how to prevent and treat this disease that can cause severe brain inflammation in horses and people. See full list on ceh. The human literature generally uses the term encephalitis for these diseases, rather than encephalomyelitis, and the corresponding viral names (e. Venezuelan equine encephalitis virus is a mosquito -borne viral pathogen that causes Venezuelan equine encephalitis or encephalomyelitis (VEE). . ctaku rmeuss rlvdx vweof xjv iiw mihlus wzeld vxjx xrmfo