1. Identify oral lesions that represent infections. 2. Recognize the clinical manifestations of bacterial, viral and fungal infections. 3. Summarize the etiology, treatment, and prognosis of each infectious disease presented. 4. Formulate a differential diagnosis for each infectious disease reviewed. 5.Educate patients with infectious diseases about their condition and ways to minimize disease transmission. 6. Modify treatment plans for patients who present with infectious diseases.