Principles of Immunology is a five-week course that provides a fundamental understanding of the immune system. The course integrates immunology with microbiology and includes relevant aspects of pharmacology and pathology. The course covers soluble mediators, cells, and organs of the immune system and how these elements work together to prevent infection. Students examine how immune system dysfunction results in autoimmune diseases and allergies, and acquire the necessary foundational knowledge of bacteriology, virology, mycology, and parasitology to understand how infectious microbes cause organ-specific and systemic diseases.