title: In this issue. Consider underlying immunodeficiency in relation particularly to recurrent respiratory symptoms which may present to an allergy service.
authors.affiliation: Imperial College, Imperial College Healthcare NHS Trust, London, UK.
authors.forename: J O
authors.initials: JO
authors.lastname: Warner
mesh_terms: D000328:Adult; D002648:Child; D002675:Child, Preschool; D003888:Desensitization, Immunologic / Q000379:methods; D005512:Food Hypersensitivity / Q000188:drug therapy / Q000209:etiology / Q000628:therapy; D006801:Humans; D006967:Hypersensitivity / Q000188:drug therapy / Q000209:etiology / Q000628:therapy*; D007153:Immunologic Deficiency Syndromes / Q000150:complications*; D008171:Lung Diseases / Q000209:etiology / Q000276:immunology; D056692:Prebiotics; D019936:Probiotics
chemical_list: D056692:Prebiotics