Live monovalent vaccine for the immunization against canine parvovirus infection. Live viral liquid vaccine. Containing antigen canine parvovirus with tissue culture method. Canine Parvovirus Vaccine. The canine parvovirus infection is a highly contagious viral illness that affects dogs. The virus manifests itself into different forms. The more common form is the INTESTINAL FORM, which is characterized by vomiting, diarrhea, weight loss, and lack of appetite and high body temperature. The less common form is the CARDIAC FORM, which attacks the cardiac muscles of very young puppies, often leading to death. The incidence of canine parvovirus infection can be reduced by early vaccination of PRO-VAC CPV.