Parental hay fever and early exposure to D pteronyssinus allergens promote IgE polysensitization to several D pteronyssinus molecules, which in turn predicts current mite-related AR and current/future asthma. These results might inspire predictive algorithms and prevention strategies against the progression of IgE sensitization to mites toward AR and asthma.

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The children's repertoire of IgG antibodies at 2 years of age to a broad array of animal foodborne, vegetable foodborne, and airborne allergenic molecules is profoundly dependent on the route of allergen exposure and the child's IgE sensitization status and only marginally involves the IgG isotype.

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