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Microbiology 9

An 18-year-old college student presents to her family physician with a non-productive cough and low-grade fevers for the past 3 weeks. She reports that several people in her dorm have been coughing as well. She is previously healthy and does not have any significant past medical history. She has not taken anything for the cough. On physical examincation, the patient's temperature 99.5° F (37.5° C) and auscultation of the lungs reveals no crackles, rhonchi or wheezing. COVID testing is negative. A chest x-ray demonstrates interstitial pulmonary infiltrates more severe than the patient's presentation suggests.

Which of the following is the most likely causative organism in this patient's illness?

  • A) Chlamydia pneumoniae
  • B) Legionella pneumophila
  • C) Mycobacterium tuberculosis
  • D) Mycoplasma pneumoniae
  • E) Streptococcus pneumoniae


Dr. Ted O'Connell

Lontricia Wilson


Dr. Ted O'Connell