CD69 and Dengue hemorrhagic fever: In patients with DHF, the percentage of CD69+ CD8+ conventional T cells was higher at day -1 (10.35%; 7.99–13.08) and day 0 (2.40%; 0.52–8.71) when compared to 2 weeks after fever subsided (0.30%; 0.14–0.57) (p<0.0001 and p = 0.0008 respectively) (Figure 5b).