[Immunologic research in pediatrics]

The child, in his ontogenesis, repeats the phylogenetic evolution of the immune processes. The immunologic maturation gradually appears, the process having a definite duration. The immunologic maturation seems to be parallel to the maturation of other physiological processes. The immune system of the child is different from that of the adult, and the development features of his immune reactivity will give a specific evolution to his morbid manifestations.