Immunity to disease has long been recognized, but only during the late nineteenth century, thanks to Louis Pasteur, Robert Koch, Elie Metchnikoff and Paul Ehrlich, did immunology become a true science able to explain mechanisms and to develop preventive vaccines. Originally medically oriented (18801910), the field passed through a stage of chemical domination (19101960) and then became biologically and, once again, medically oriented.
Keywords: immunology; allergy; vaccination; antibodies




