Question

A 45-year-old man with HIV infection (CD4 count 150 cells/µL) presents with shortness of breath and a dry cough over 3 weeks. He is hypoxic (SpO2 88% on air). Chest X-ray shows bilateral interstitial infiltrates. What is the most likely causative organism?

Accepted Answer

Pneumocystis jirovecii

Answer

Aspergillus fumigatus

Answer

Mycobacterium tuberculosis

Answer

Streptococcus pneumoniae

Answer

Staphylococcus aureus

Practice question

A 45-year-old man with HIV infection (CD4 count 150 cells/µL) presents with shortness of breath and a dry cough over 3 weeks. He is hypoxic (SpO2 88% on air). Chest X-ray shows bilateral interstitial infiltrates. What is the most likely causative organism?