CASE 85 On a summer day in August, an 18-year-old man was taken to the emergency department of a local hospital because of a 2-day history of fever, weakness, pain…

CASE 83 A 63-year-old man awoke early with nausea, vomiting, and confusion and was taken to a local emergency department for evaluation. His illness, which began 5 days prior to…

CASE 78 One summer evening, a 63-year-old white man came to the emergency department of a nearby hospital presenting with a 6-day history of fever, moderate headache, generalized myalgia, arthralgias,…

CASE 54 A 27-year-old woman was seen in a clinic for complaints of fevers, chills, headache, malaise, anorexia, and abdominal pain for several days. She stated she came today because…

CASE 64 A 28-year-old Hispanic man was brought to the emergency department of a general hospital for severe headaches and two generalized seizures. He had first noticed headaches, which had…

CASE 51 A 49-year-old woman presented with high fever and chills, jaundice, and upper abdominal pain for 3 days. The patient was a recent immigrant from Argentina. One year before,…

CASE 91 A 44-year-old female presented to the emergency department with complaints of fever, cough, myalgias, and mild shortness of breath for 2 days. She also had a moderate headache…

CASE 88 In early summer, a previously healthy 42-year-old man was admitted to his local hospital with a 1-week history of fever, muscle aches, and malaise. For 2 days before…

CASE 63 A 30-year-old white woman was brought to the emergency department of a local hospital with a 2-week history of progressively severe headache, nausea, and vomiting; several seizures had…

CASE 79 A 9-year-old boy was brought to the hospital by his parents with complaints of repeating intense chills and daily high fever for 4 days. The parents said that…