Fig. 4.

DENV2 NS1 antibody responses to NS1 peptides in the febrile phase. a–f DENV2 NS1-specific IgG antibody responses to 47 DENV2 NS1 overlapping peptides were measured by ELISA in patients with DF (n = 10) and DHF (n = 10) on day 3 of illness. Differences in mean values between antibody responses to overlapping peptides in patients with DF and DHF were compared using the Mann–Whitney U test (two tailed). Error bars indicate the means and standard deviation (SD). *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001