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Review Question - QID 109713

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QID 109713 (Type "109713" in App Search)
A 37-year-old man comes to the emergency department with the chief complaint of a high fever for several days. In addition to the fever, he has had malaise, chest pain, and a dry cough. He recently went on vacation to South America but has returned to his job delivering packages. He has several friends who recently had influenza. Hi temperature is 102.8°F (39.3 °C), blood pressure is 137/80 mmHg, pulse is 104/min, respirations are 19/min, and oxygen saturation is 98%. Chest exam reveals a deep noise found bilaterally in the lung bases. Chest radiograph reveals a widened mediastinum and bilateral lung infiltrates. Which of the following is characteristic of the most likely organism responsible for this patient's symptoms?