HIV opportunistic infection prophylaxis — ABIM Board MCQ
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Correct answer: E — Trimethoprim-sulfamethoxazole prophylaxis
A CD4 count below 200/mm3 warrants Pneumocystis prophylaxis, and TMP-SMX also protects against toxoplasmosis when Toxoplasma IgG is positive and CD4 count is below 100/mm3.
Reference: NIH/IDSA Opportunistic Infection Guidelines in HIV