CD8A and dengue disease: Absolute numbers of CD8+ T cells were lower from the first to the fourth days after onset of symptoms (median 253 cells/μl, IQR, 151–358 for days 1 and 2; median 201 cells/μl, IQR, 158–345 for days 3 and 4) when comparing dengue patients with healthy controls (median 465 cells/μl, IQR, 329–605).