For vaccination of healthy horses, 6 months of age or older, as an aid in the prevention of Eastern and Western Encephalomyelitis and Tetanus, as an aid in the control of respiratory disease caused by Equine Influenza Virus and Equine Herpesvirus and as an aid in the reduction of Influenza virus shedding. Duration of Immunity (DOI) has been shown to be at least 6 months for Influenza. Foals nursing immune-dams should be vaccinated when maternal antibody levels will allow active immunization.