Bacterial Infections USMLE Step 1 Practice Question
A 19 year old college student presents with low grade fever, malaise, and a persistent dry cough. Chest radiograph shows diffuse interstitial infiltrates that appear worse than expected from his physical examination. He develops mild hemolytic anemia, and a cold agglutinin test is positive. Which of the following organisms is the most likely cause of his illness?
Answer choices
- AStreptococcus pneumoniae
- BLegionella pneumophila
- CMycoplasma pneumoniaeCorrect answer
- DRespiratory syncytial virus
- EKlebsiella pneumoniae
- FChlamydia trachomatis
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