However, horses with suspected West Nile virus should be isolated from mosquito bites, if at all possible. No. EEE, WEE, and VEE belong to another family of viruses for which there is no cross-protection. There is no approved vaccine currently available for West Nile virus. The answer is not known for sure at this time, but previously published data suggest that the virus is detectable in the blood for only a few days. There is no reason to destroy a horse just because it has been infected with West Nile virus.
Data suggest that most horses recover from the infection.
Treatment would be supportive and consistent with standard veterinary practices for animals infected with a viral agent. Stay indoors at dawn, dusk, and in the early evening. Wear long-sleeved shirts and long pants whenever you are outdoors. Apply insect repellent sparingly to exposed skin. Repellents may irritate the eyes and mouth, so avoid applying repellent to the hands of children.