Atypical pathogens were detected in 34 tests (16.6%) by CMTs (Figure 4), including 24 tests of Mycobacterium tuberculosis (22 tests with T-SPOT.TB positive, 1 test with MTB PCR positive, and 1 test with sputum smear acid-fast staining positive), and 10 tests of Mycoplasma pneumoniae (4 seropositive for MP IgM and 6 positive for MP PCR). This evidence concerns the gene CD40LG and tuberculosis.