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Abstract
Provided herein are compositions (e.g., probiotic, pharmaceutical, etc.) comprising one or more strains of non-Clostridia class bacteria and methods of use thereof for allergen desensitization. In particular, bacteria of bacterial classes such as Negativicutes, Actinobacteria, and Bacteroidia support allergen desensitization, for example, by promoting production of metabolites that aid in desensitization or performing catabolism of food allergens.