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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 /.
Communicable diseases can be broken down into five different categories: respiratory diseases (common cold and pneumonia), intestinal diseases (dysentery, cholera, typhoid, paratyphoid fevers), insect borne diseases (malaria, typhus, yellow fever, dengue), sexually transmitted diseases (syphilis, gonorrhea, chancroid, AIDS), and miscellaneous diseases (tetanus, rabies, dermatophytosis, tuberculosis).