In Olson v. Saint Croix Valley Memorial Hospital, Inc., 55 Wis. 2d 628, 201 N.W.2d 63 (1972), a plaintiff was given a blood transfusion which impaired her ability to have children. After several unsuccessful pregnancies, the plaintiff learned that she had been given blood with an incompatible Rh factor during the transfusion. The Court held that the date of injury was the date of the transfusion and not the dates of her lost pregnancies because the blood she was negligently given immediately caused injurious changes to Olson. See Olson, 55 Wis. 2d at 633, 201 N.W.2d at 65.