Review each clinical case carefully. Identify the bacterium responsible for the described condition and match it with its pathogenesis mechanism. Use the given clues such as age, symptoms, exposure history, and toxin effects to determine the correct answer. Then drag and drop each bacterium and its corresponding pathogenesis into the correct boxes. This exercise reinforces your understanding of bacterial toxins, virulence factors, and disease presentations — high-yield for USMLE Step 1 and Step 2.