The present invention relates to antigens and methods for the suppression of a hypersensitivity immune response via bystander suppression with an antigen unrelated to the allergen triggering a hypersensitivity immune response such as an allergic response in an individual. Treatment regiments covering the administering the unrelated antigen to the oral cavity (e.g. sublingual mucosa) combined with the administration of the unrelated antigen to either the respiratory tract, gastro-intestinal tract or skin in a simultaneous, contemporaneous, separate or sequential manner is provided.