Although the level quantified remained low, IL-22 production in cord blood samples from patients with ongoing infection was significantly correlated with the frequency of NK cells in neonates (r = −0.8047; p = 0.0043) (Figure 5D) and the production of estradiol (r = −0.6713; p = 0.0143) (Figure 5E). Here, IL22 is linked to infection.