Fig. 1From: Interferon-γ release assay as a sensitive diagnostic tool of latent tuberculosis infection in patients with HIV: a cross-sectional studyCD4+ T lymphocyte counts and TST outcome in 90 HIV-infected patients with positive IGRA results and at risk of LTBI. CD4+: Cluster of differentiation – 4; HIV: Human Immunodeficiency virus; TST: Tuberculin Skin Test; IGRA: Interferon-γ release assay; LTBI: Latent tuberculosis infectionBack to article page