When serum level of MIF was increased by 1 ng/ml, the unadjusted and adjusted risk for disseminated TB would be increased by 9% (OR: 1.09 [95% CI: 1.03–1.15], P = 0.003) and 4% (OR: 1.04 [95% CI: 1.00–1.11], P = 0.012), respectively. This evidence concerns the gene MIF and tuberculosis.