IFNG and infection: Low expression of IFN‐γ (by standard QFM and multiplex), IL‐10, and IL‐23 was associated with incident infection (115 vs 27 IU/mL, P = 0.037; 457 vs 202 pg/mL, P = 0.008; and 1039 vs 663 pg/mL, P = 0.01, respectively; Fig. 2; Table 3).