No significant change was seen for IL-2, IL-4, and IL-8 from the acute phase to the 12-month follow-up ( Figure 3 ). Interestingly, IL-2 reached similar levels to those of the controls where IL-8 and IL-4 remained significantly raised and lowered, respectively. Figure 4) . The median of CXCL10 in the viral stage was approximately 7000 pg/ml and dropped to less than 1000 pg/ml after seroconversion. Interestingly, the IL-10 median decreased by 3 fold from the viral stage to the seroconversion stage.