The results demonstrated that AUC value of ROC curve was 0.797 for IL-5, followed by 0.760 for β-NGF (Figure 4), and the AUC of other cytokines ranged from 0.676 to 0.752 (Figure 4), suggesting the appreciable reliability of 14 cytokines as predictive indicators for different immunization response to hepatitis B vaccine in infants. This evidence concerns the gene IL5 and hepatitis A virus infection.