Elvira Dávila Ortiz was a Colombian nurse, a pioneer in this field. Her work was fundamental to the creation of the Blood Bank in her country. Her efforts focused on convincing the usefulness of blood transfusion in saving lives. Before her, people thought that this practice had negative consequences. She understood the importance of transfusion during her internship: the large number of children suffering from anemia prompted her to look for a solution to this pathology. The innovative scope of her studies convinced the authorities to give her the task of founding the Colombian Blood Bank. She is considered to be one of the most important people in the field of nursing.