mosquito safe texas west nile virus protectionHorses are the most susceptible of all farm animals. Infection with West Nile Virus does not always lead to signs of illness in people or animals. Horses appear to be a species that is susceptible to infection with the virus. In horses that do become clinically ill, the virus infects the central nervous system and may cause symptoms of encephalitis. Clinical signs of encephalitis in horses may include a general loss of appetite and depression, in addition to any combination of the

Following signs:

  • Fever
  • Weakness of hind limbs
  • Paralysis of hind limbs
  • Impaired vision
  • Ataxia (weakness)
  • Head pressing
  • Aimless wandering
  • Convulsions (seizures)
  • Inability to swallow
  • Walking in circles
  • Hyperexcitability
  • Coma

It is important to note that not all horses with clinical signs of encephalitis have West Nile encephaliti.