Next, we evaluated the presence of soluble polypeptides for IFNγ, IL-1β, IL-4, IL-6, IL-8, IL-10, CXCL10, and TNFα in serum of animals following infections with Att-S74-T3Bo and Vir-S74-T3Bo (Figure 6). This evidence concerns the gene CXCL8 and infection.