Poorly Controlled Hiv (cd4 in Medicine / Internal Medicine — 28yo Man | Infectious Diseases | SMLE Q#11794

SMLE Question #11794

Medicine / Internal Medicine Infectious Diseases

Objective: OBJ-349

Last updated: February 2026
A 28-year-old man with poorly controlled HIV (CD4 count 60 cells/µL) and not taking antiretroviral therapy has 6 days of progressive shortness of breath, nonproductive cough, and fever despite outpatient oral antibiotics. He develops pleuritic chest pain and worsening hypoxemic respiratory failure requiring intubation. Chest X-ray shows bilateral diffuse interstitial and alveolar opacities. Which of the following is the most likely causative organism for his lung disease?

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