Treatment
There is no cure for panleukopenia or the parvovirus that causes it, so treatment involves supportive care. Preventing dehydration in cats that experience continual vomiting and diarrhea requires the administration of fluids -- either into the cat's vein, through intravenous fluid therapy, or under the skin through a procedure called subcutaneous fluid therapy. Antibiotics can help prevent or treat bacterial infections in cats that have a low white blood cell count because of the disease.