CDV: Canine distemper is a virus that affects a dog’s respiratory, gastrointestinal and central nervous systems, as well as the conjunctival membranes of the eye.
FPV: Feline parvovirus is the virus that causes feline panleukopenia. This disease is quite serious, and if left untreated it can end your cat's life in a short time. It can affect cats of all ages, and it's highly contagious.
CPV: Canine parvovirus is a highly contagious viral disease that can produce a life-threatening illness. The virus attacks rapidly dividing cells in a dog’s body, most severely affecting the intestinal tract. Parvovirus also attacks the white blood cells, and when young animals are infected, the virus can damage the heart muscle and cause lifelong cardiac problem.