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Viruses, germs, microbes ... during its first years, your toddler must fight against many aggressors. To develop his defense system, he is as of all his faculties: he needs training to get going. The explanations of Dr. Beatrice di Mascio, peditary.
How does the body defend itself?
- Immunity is forged in the first years of life. It represents all the mechanisms allowing the organization to defend itself against all aggressors.
- From birth, your baby is confronted with many viruses and bacteria. To protect itself, it has a defense system present at the level of its blood circulation.
- Main allies: white blood cellss, and among them neutrophils and macrophages - true killer cells that are responsible for destroying microbes - T cells that activate killer cells. Finally, the B lymphocytes that produce antibodies or immunoglobulins that are divided into 3 classes: Ig A, Ig G, and Ig M. A deficiency of these immunoglobulins corresponds to a specific symptom: if your baby suffers from a lack of Ig A he will be more likely to suffer from diarrhea. A lack of IgG will predispose to respiratory infections and ENT.
- If your child has repeated infections, your doctor will question the quality of his defense system. A check of his blood count, and in particular the determination of his immunoglobulins, may be necessary.
When is immunity acquired?
- Immunity is formed during the first years of life, more or less quickly. Everything will depend on the natural predispositions of your child, his mode of care, his diet, in short his way of life. A baby breastfed will, in principle, be more resistant to intestinal infections, because breast milk is richer in IgA than milk powder.