In managing TB exposure risk in expedition settings, which action is appropriate?

• A. Treat latent infection when indicated
• B. Always hospitalize exposed individuals
• C. Discontinue airborne precautions
• D. Vaccinate everyone with BCG

Answer: (A)

Managing TB exposure in expedition settings hinges on preventing progression to active disease and stopping transmission. After exposure, the most appropriate step is to assess for latent TB infection and treat if indicated. Testing with a tuberculin skin test or an IGRA helps identify latent infection; if positive, starting a full course of latent TB therapy dramatically lowers the chance that latent infection will become active TB, which is especially important in remote, crowded environments with limited access to care.

Hospitalizing exposed individuals is not routinely necessary unless there are signs or symptoms of active TB or other clinical concerns. Airborne precautions should be maintained until active TB is reasonably ruled out, rather than discontinued. Vaccinating everyone with BCG is not a standard post-exposure management strategy; its role in adults for preventing TB disease is limited and it does not serve as a reliable immediate measure after exposure.