Calvenza-03 EIV/EHV is an equine combination vaccine for the vaccination of healthy horses 6 months of age or older as an aid in the prevention of respiratory diseases caused by equine herpesvirus type 1 (EHV-1) and type 4 (EHV-4), and equine influenza virus types A2 North American and A2 Eurasian. Calvenza-03 EIV/EHV contains the strains Ohio/2003, Kentucky 2/95 and Newmarket 2/93 for optimum equine influenza protection. Killed virus vaccine. Combination vaccine for horses Helps prevent respiratory disease For healthy horses and foals at least 6 months of age Killed virus vaccine, no reconstitution necessary All vaccines are shipped Express 1-2 Days. A $29.95 flat rate fee is charged for all orders containing vaccines. Someone should be present to sign for and receive the vaccine order when it ships to you. For more shipping info click here. NOTE: This item cannot be shipped to Minnesota, Canada and P.O. Boxes. Use must be approved by your veterinarian.