The Prestige line of influenza-containing vaccines offers the next generation equine influenza protection. It includes Florida ’13 of the clade 1 family and Richmond ’07 of the clade 2 family, meeting current World Organization for Animal Health (OIE) and American Association of Equine Practitioners (AAEP) guidelines for clade 1 and clade 2 strains. The clade 1 family of equine influenza primarily circulates in the United States, while clade 2 predominantly circulates in Europe. The Prestige line of vaccines features the proprietary Havlogen adjuvant and antigen purification system, formulated to maximize protection and minimize adverse reactions. Influenza vaccination is recommended at six-month intervals for any performance, show or pleasure horses constantly at risk of exposure, including resident horses exposed to traveling horses.