Progard CPv is a modified live virus vaccine containing an attenuated strain of parvovirus.  Progard CPv is presented in a ready-to-use, liquid form.  Progard  CPv is for vaccination of healthy dogs against canine parvovirus infection.  Aseptically administer 1 mL subcutaneously or intramuscularly. Initial vaccination of healthy dogs may be given as early as four weeks of age with booster injections administered every 3-4 weeks until 12 weeks of age. Dogs over 12 weeks of age should initially receive two doses 3-4 weeks apart. Annual revaccination with a single dose is recommended. Avoid vaccinating pregnant bitches.Only healthy dogs should be vaccinated.