The increased IFN-γ levels, at day 6 post-infection with DENV-1 0111/2011 and DENV-4 BEL 83791 and at days 4 and 6 with DENV-2 0126/2010, were statistically significant for DENV-2 0126/2010 (p≤0.01 at both days 4 and 6 post-infection). The gene discussed is IFNG; the disease is infection.