(Merial) Recombitek rWNV-EWT is intended for the vaccination of healthy horses as an aid in the prevention of disease caused by West Nile Virus, Eastern and Western encephalomyelitis and tetanus. Give 2 ml IM to horses 4 months of age or older. Repeat in 4 to 6 weeks. Revaccinate annually with a single 2 ml IM dose. Requires mixing. Order syringes separately.