Tuberculin Skin Testing and Treatment Modulates Interferon-Gamma Release Assay Results for Latent Tuberculosis in Migrants
Figure 5
IGRA responses following LTBI treatment in individuals positive by IGRA at any stage of the study.
(A) SFC numbers detected to ESAT-6 by T-SPOT.TB; (B) SFC numbers detected to CFP-10 by T-SPOT.TB; bars = medians; (C) IFN-γ responses detected by QFT-GIT in individuals who were initially positive at day 0 compared to day 200 (left) and IFN-γ responses detected by QFT-GIT in individuals who were positive at day 7 compared to day 200. In each case samples from the same individual at these two times are linked by bars. QFT-GIT = QuantiFERON Gold in-Tube; IFN-γ = interferon-gamma; ESAT-6 = early secretory antigenic target-6; CFP-10 = culture filtrate protein-10; IU = international units; SFC = spot forming cells; Rx = treatment.