Thirdly, despite the authors' presentation of the BCG vaccination history, tuberculosis (TB) history, and tuberculin skin test (TST) results obtained through questioning in Table 1 in Pittet, L.F′ study,7 participants were not screened for Mycobacterium tuberculosis (MTB) infection status using either the TST or interferon gamma release assay (IGRA) methods. Here, IFNG is linked to tuberculosis.