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The outline of the study design. The (*) means that immunoconversion was observed in one patient. In this case the Ly-TbSpot, the Mantoux test and the B-TbIFNγ were done and in August and repeated in December, the two were negative and the B-TbIFNγ was once borderline but the repeated B-TbIFNγ test and the Mantoux turned positive in February (for more details see Table 3).
