As shown in Figure 2, the median CXCL9 concentration in the serum increased from 105 pg/mL to 755 pg/mL, 1110 pg/mL, and 521 pg/mL at 2, 4, and 6 weeks post-infection, respectively (p<.001, <.001, and <.05, respectively, compared to non-infected controls). The gene discussed is CXCL9; the disease is infection.