How serious is WNV disease in horses?
A8. WNV infection can result in inflammation of the central nervous system (encephalomyelitis). Symptoms range from listlessness, depression, trembling, loss of appetite, stumbling, in-coordination, weakness, head tilting, and partial paralysis, to convulsions and even death. Fever appears in only approximately 25% of the cases. The disease can progress very rapidly with severe symptoms appearing within 12 hours. Mortality rates amongst horses showing clinical signs of disease are approximately 35%. Q9. Can a horse with WNV be treated? A9. There is no specific treatment for WNV. Since a virus causes the disease, antibiotics will be ineffective. Contact your veterinarian if any signs of nervous system disease are observed. Your veterinarian will use supportive therapy, such as good nursing care, intravenous (IV) fluids to prevent dehydration, and measures to prevent secondary infections. In addition, samples will be collected for further laboratory testing. If your veterinarian suspects
