A Spearman correlation analysis showed that the increased sCD163 concentration was positively correlated with the increased IL-6 (Figure 6A, r = 0.4837, P<0.0001), IFN-γ (Figure 6B, r = 0.4929, P<0.0001) concentration in the HFRS patients. Here, IL6 is linked to hemorrhagic fever with renal syndrome.