Is There a Vaccine for West Nile Virus?
There is currently no vaccine available to protect humans from the
West Nile virus. Scientists are working on this issue, and there is hope that a West Nile virus vaccine will become available in the next few years.
West Nile Vaccine for Horses
There is a vaccine licensed for use in horses (known as the equine West Nile vaccine). Some people wonder whether humans should take this vaccine. The answer is no. This vaccine has not been studied in humans and could be harmful. The effectiveness of this vaccine in preventing West Nile virus infections in horses has yet to be fully evaluated, and its effectiveness in humans is completely unknown.
Also, veterinary vaccines are not manufactured with the same rigorous quality and purity standards required for human vaccines, nor are they required to undergo the extensive field testing required of human vaccines before they are licensed. For these reasons, veterinary vaccines should never be used in humans.