Of these 24 genes, 10 genes were significantly up-regulated in the infection group compared with that in the healthy group, for example, IGLV3-19, IGLV3-1, CPXM1, CFD, APMAP, S100A9, HIST1H4A, PLTP, IL6R, and IGLV5-45. This evidence concerns the gene S100A9 and infection.