Passive smoking of a tobacco smoke in early infancy raises risk of development of allergies, researchers of University of Pennsylvania believe. Interrogation more than 5000 families has been carried out, questions were about their children's allergies and ecological factors to which they were exposed before and after a birth. They included parental smoking, a pet (hair of an animal and a dead skin), and foodstuff. Parents were interrogated, when their children were in the age of 2 months and 12 months, and again when it was 2 and 4 years. The sample of blood has been taken at 2700 children in the age of 4 years to find out presence of an antibody the IgE. IgE - the parameter of immune system recording presence at an organism of the person of allergens. High levels of it specify 'sensitisation' to allergens.
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