IGHE and allergic disease: This bacterium effectively protects infants with a genetically high risk of allergic diseases caused by the development of atopic diseases [19,20,21], and it also alleviates atopic eczema-dermatitis syndrome by enhancing interferon-γ responses of peripheral lymphocytes in infants with cow milk allergy or IgE-associated atopic eczema-dermatitis syndrome [22,23].