WNV Information for Veterinarians and Horse Owners


Protect your Horse from West Nile virus

While horses and birds are affected by WNV, horses are affected much more often than any other domestic animal. Livestock and poultry do not commonly show any illness if infected by WNV. Although horses are susceptible to the virus, few horses exhibit any signs of clinical illness. In the U.S. prior to the 2004 California outbreak, those horses that develop clinical illness, approximately 30% die or must be destroyed and another 17% have been shown to suffer from long–term related debilitation.  A vaccine is now available to help protect your horses from West Nile virus.

General Information on WNV Infection in Horses:

    California Department of Food & Agriculture: Animal Health Branch

    Centers for Disease Control: West Nile Virus and Horses

    UC Davis: West Nile Virus in Horses

West Nile Virus Equine Vaccination Information:

    American Association of Equine Practitioners: WNV Vaccination Guidelines


Latest Information on West Nile Virus Case Numbers:

    California West Nile Virus Home

    WNV Cases in San Diego County

For More Information On 
WNV Or Other Vectors Contact: 
(858) 694-2888  

SD Fight the Bite Homepage