Latent TB infection (LTBI) management includes several considerations. Which statement accurately reflects LTBI in the context of HIV?

• A. LTBI is contagious and requires isolation; HIV does not affect progression.
• B. LTBI means there is no risk of progression to active TB.
• C. LTBI is not contagious; but if HIV is present, there is a higher risk of developing active TB.
• D. LTBI requires no follow-up or treatment regardless of HIV status.

Answer: (C)

Latent TB infection is not contagious because the bacteria are dormant and the person has no symptoms. But when HIV is present, the immune system is weakened, especially the cell-mediated defenses that keep TB in check, so the risk that LTBI will progress to active tuberculosis is much higher. Because of this, people with HIV should be evaluated for LTBI and offered treatment to prevent progression to active TB. Isolation and infection control apply to active TB, not LTBI. Statements that LTBI is contagious, that there’s no risk of progression, or that no follow-up or treatment is needed regardless of HIV status, don’t reflect how LTBI behaves in the context of HIV.