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Flow chart of case follow-up by quantiFERON-TB Gold In-tube (QFT-GIT). The results of QFT-GIT were not all shown. If the first check was determinate, the result of the second check was shown. The third check was displayed only when the first 2 checks were both positive. (∗) Lost to follow-up; (+) 1 was lost to follow-up.
