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Definition: Disorders caused by abnormal or absent immunologic mechanisms, whether humoral, cell-mediated, or both. Synonym(s): Immune Disorders / Immunologic Diseases / Diseases of Immune System / Immune Diseases /.
According to the Mayo Clinic, specific infections and diseases include: 1  viral infections, such as mononucleosis. 2  bacterial infections. 3  parasitic infections, such as malaria. 4  metabolic disorders. 5  hemolytic anemia. 6  liver diseases, such as cirrhosis. 7  blood cancers and lymphomas, such as Hodgkin's disease.