These flashcards will help medical students organize and recall medical microbiology information for course exams and USMLE Step 1. The cards are grouped into sections on gram-positive, gram-negative, and other bacteria; RNA and DNA viruses; fungi; protozoa; and helminths. Each section begins with charts summarizing key information on the group of microorganisms, followed by cards for each individual microbe, which include clinical presentation, pathobiology, diagnosis/treatment, quick facts, and a case study. Schematic illustrations show the morphology and pathogenesis of different microorganisms. A companion Website provides 70 USMLE-style questions and answers.