Examine etiology, pathogenesis, diagnosis, and immunobiology of the major microbial diseases, with emphasis on their prevention. Three lecture hours a week for one semester. Biology 361 and Molecular Biosciences 361 may not both be counted. Prerequisite: Biology 325 or 325H, and Molecular Biosciences 326M (or Biology 326M) or 326R (or Biology 326R) with a grade of at least C- in each.