When the M1 markers’ panel was measured, IL-6 showed statistically significant differences for the three serotypes studied at both times of bacteria stimulation compared with the control condition (p = 0.0006, p = 0.0060, and p = 0.0138 for the serotypes a, b, and c, respectively, at 2 h of infection, and p = 0.0005, p = 0.0008, and p < 0.0001 for the serotypes a, b, and c, respectively, at 24 h). This evidence concerns the gene IL6 and infection.