Application of immunological principles to the understanding of animal health and disease with a focus on livestock and companion animals. Students will apply a broad understanding of host-pathogen interactions and the basic mechanisms of disease progression to assess the short and long-term impact of pathogenesis to the health of animals, their caretakers, and consumers. Lectures will be followed by active discussion of selected readings. Not to be taken if credit received for AN SC 411. Prerequisites: IMIN 200 and consent of instructor.