Fig. 1

Humoral immune response to the PvGAMA antigen. The total levels of IgG specific to recombinant PvGAMA in human plasma from patients with acute P. vivax infection patients (n = 40), villagers in malaria endemic areas (n = 15) and healthy controls (n = 50) were measured by conventional ELISA. Each symbol represents the antibody titre of one individual. The solid line shows the median antibody titre in each group. The dotted line indicates the cut-off values