A previously healthy 42-year-old man developed temperatures to 38.8 C, muscle and joint
aches, fatigue, and loss of appetite. Within several days, he also had diarrhea and emesis.
On the fourth day of his illness, he saw his physician, who made a diagnosis of
gastroenteritis. When the fever and fatigue had continued for 2 weeks, the patient went to an
urgent care center. By this time, his enteric symptoms had ceased. He had no complaints of
headache, sore throat, or rash. He was described as looking tired. He had a temperature of …