Introduction-Microbiology Introduction-Immunology SECTION 1 Microbiology PART A Bacteria Chapter 1 A 28-Year-Old Female With Fever and Abdominal Pain Chapter 2 A 25-Year-Old With Fever and Abdominal Pain After Returning From Travel Chapter 3 A 48-Year-Old Female With Abdominal Cramping and Painful Diarrhea Chapter 4 A 72-Year-Old Female With Diarrhea and Severe Abdominal Pain Chapter 5 A 49-Year-Old Woman With Sore Throat and Fever Chapter 6 A 68-Year-Old Male With Fever, Cough, and Worsening Dyspnea Chapter 7 A 35-Year-Old Male Presents With a Seizure Chapter 8 A 21-Year-Old Male With Pharyngitis Chapter 9 A 70-Year-Old-Female With Fevers and Chills Chapter 10 A 56-Year-Old Male With Fever, Headache, and Rash Chapter 11 A 62-Year-Old Female With Flank Pain and Fevers Chapter 12 A 54-Year-Old Homeless Male With Fevers, Chills, and Shortness of Breath Chapter 13 A 43-Year-Old Female Presents to the Urgent Care With a 3-Day History of Sore Throat and Pain When Swallowing Chapter 14 An 83-Year-Old Female With Generalized Weakness, Fever, and Altered Mentation Chapter 15 A 42-Year-Old Male With Low Back Pain Chapter 16 A 20-Year-Old Male With Penile Discharge Chapter 17 A 57-Year-Old With History of Chronic Lymphocytic Leukemia Presenting With 2 Weeks of Fever, Cough, and Dyspnea Chapter 18 A 23-Year-Old Female With Hemoptysis Chapter 19 A 66-Year-Old Female With 2 Years of Productive Cough, Dyspnea, and Malaise PART B Virus Chapter 20 An 11-Month-Old Girl With Fever and a Rash Chapter 21 A 33-Year-Old Woman With Vomiting and Diarrhea After a Cruise Chapter 22 A 39-Year-Old-Male With Right Upper Quadrant Pain and Hematochezia Chapter 23 A 48-Year-Old Male With Nonproductive Cough, Dyspnea, and Loss of Smell Chapter 24 A 30-Year-Old Female With Malaise, Cough, and Myalgias Chapter 25 A 42-Year-Old Female With Odynophagia Chapter 26 A 16-Year-Old Female With Sore Throat Chapter 27 A 34-Year-Old Female With Diarrhea Chapter 28 A 48-Year-Old Male With Sudden Onset of Fever, Headache, and Confusion Chapter 29 A 38-Year-Old HIV Patient With Various Nonspecific Symptoms PART C Fungus Chapter 30 A 57-Year-Old Female With Cough and Weight Loss Chapter 31 A 55-Year-Old Woman With Rheumatoid Arthritis on Immunosuppressants Presents With Cough, Dyspnea, and Pleuritic Chest Pain Chapter 32 A 21-Year-Old Male With Hemoptysis Chapter 33 A 73-Year-Old-Male With a Painful Knee PART D Parasite Chapter 34 A 45-Year-Old Male With Prolonged Diarrhea Chapter 35 A 70-Year-Old Female With Abdominal Pain Chapter 36 A 40-Year-Old Immunocompromised Male With Ring-Enhancing Brain Lesions Chapter 37 A 35-Year-Old Male Returning From Travel With Fever and Headache Chapter 38 A 45-Year-Old Male With Heart Failure and Cardiomyopathy SECTION 2 Immunology Chapter 39 A 6-Year-Old Boy With Fever, Cough, and Shortness of Breath Chapter 40 A 20-Month-Old Girl With Recurrent Infections Chapter 41 A 25-Year-Old Female With a Diffuse, Itchy Rash, Fatigue, and Joint Pain Chapter 42 A 7-Month-Old Boy Presents With Chronic Diarrhea and Failure to Thrive Chapter 43 A 24-Year-Old Female Presents With Chronic Rhinitis, Sinus Congestion, and Recurrent Sinusitis Chapter 44 A 50-Year-Old Male Establishing Care Chapter 45 Four-Day-Old Boy Presents With Lethargy, Poor Feeding, and Craniofacial Abnormalities Chapter 46 A 4-Month-Old Boy With Bloody Diarrhea and Eczema Chapter 47 A 33-Year-Old Pregnant Female With Fever, Malaise, and Myalgia Chapter 48 A 66-Year-Old Man Is Found by Paramedics With Hives, Hypotension, and Loss of Consciousness Chapter 49 A 6-Year-Old Girl With Wheezing, Lip Swelling, and Vomiting Chapter 50 A 29-Year-Old Male With Hemoptysis Chapter 51 A 12-Year-Old Boy With Fever, Arthralgia, and Rash Chapter 52 A 14-Year-Old Boy With Weeping, Pruritic Lesions on Lower Extremities Chapter 53 A 7-Year-Old Boy With Arthralgias, Abdominal Pain, and Palpable Purpura Chapter 54 A 67-Year-Old Male With Malaise and Fever After a Kidney Transplant Chapter 55 A 4-Month-Old Infant With a History of Severe Combined Immunodeficiency Who Underwent Allogeneic Stem Cell Transplant and Presents With Pruritic Morbilliform Rash and Diarrhea Chapter 56 A 4-Year-Old Boy Presents With Persistent Rash and Chronic Pruritis Chapter 57 A 4-Year-Old Boy With Burning Sensation in the Chest and Abdominal Pain Chapter 58 A 42-Year-Old Female Presents to the Emergency Department With Generalized Pruritus.