Previous reports from Sub-Saharan Africa [17] , [18] found trends towards markedly lower levels of positive Quantiferon/QFT-IT but not T-SPOT.TB results in individuals with CD4+ T-cell counts of <100, whereas other studies from low TB prevalence countries had not seen such a marked trend [21] .
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Interferon gamma release assays for the diagnosis of latent TB infection in HIV-infected individuals in a low TB burden country.
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