What is the relationship between TB and HIV infection?

Updated: Jul 01, 2019
  • Author: Nicholas John Bennett, MBBCh, PhD, MA(Cantab), FAAP; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

With specific regard to TB, the relationship with antiretroviral therapy is complex. A large multi-national study found that the relative risk of acquiring TB after starting HAART was approximately half that of those in whom HAART was not started. However, there was evidence for immune reconstitution inflammatory syndrome (IRIS) in some patients co-infected with HIV and TB in the first few months of therapy. In addition, those older than 50, or with pretreatment CD4 T-cell counts less than 50/µL, were less likely to see the same reduction in TB incidence. [133]


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