Human immune system consists of organs and tissues the main task of which is to develop various cells and antibodies. It is important for parents to have an idea of it, at least, on the whole. So, the immunity can be inborn (nonspecific) and acquired (specific). Inborn immunity steps in when an organism is combating, for example, with inflammatory processes.
Speaking of acquired immunity, an organism begins to develop antibodies to combat pathogenic agents that have got into the organism, for example, in case of ARVI, flu. Induced immunity is developed with vaccinations: vaccination helps to protect a child from many serious diseases the child’s organism is unable to cope with by itself. That is why an immunologist controls the compliance with children’s vaccination schedule.