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IgE reactivity to antigens from Gram‐positive and Gram‐negative bacteria is common in patients suffering from respiratory and skin manifestations of allergy, but the routes and mechanisms of sensitization are not fully understood. The analysis of the genome, transcriptome and microbiome of house dust mites (HDM) has shown that Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) species are abundant bacteria within the HDM microbiome. Therefore, our aim was to investigate whether HDM are carriers of bacterial antigens leading to IgE sensitization in patients suffering from atopic dermatitis.

The food allergy epidemic of recent years has led to the search for safe and effective methods of immunotherapy for foods. Studies of epicutaneous immunotherapy (EPIT) in mice have shown promising safety and efficacy data. Murine models have also identified probable mechanisms for the development of tolerance to food allergens, including the induction of regulatory T cells. Clinical data is lacking, but relatively small and early studies among peanut and cow’s milk allergic subjects suggest that EPIT has an excellent safety profile,particularly compared to other methods of specific allergen immunotherapy.

Food allergy naturally resolves in a proportion of food-allergic children without intervention; however the underlying mechanisms governing the persistence or resolution of food allergy in childhood are not understood.