Description Prestige WNV has been shown to be effective for the vaccination of healthy horses 6 months of age or older against West Nile Virus. This product has been shown to be effective against encephalitis and viremia caused by West Nile Virus.PRODUCT DETAILS:Use prior to mosquito season; generally spring (depending on region of country) Exceptional safety profile with Havlogen adjuvant and Antigen Purification System⢠West Nile virus is a core vaccine, recommended by AAEP for all horses, every year1 1 AAEP Core Vaccine Guidelines (aaep.org)