[Evidence for an immune defect: fact check with ELVIS].
D000004:Abbreviations as Topic; D002908:Chronic Disease; D003937:Diagnosis, Differential; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000175:diagnosis* / Q000276:immunology*; D009894:Opportunistic Infections / Q000175:diagnosis* / Q000276:immunology*; D012008:Recurrence