Figure 2.

Association between the percentage of responders that recognize each recombinant protein and the number of previous episodes malaria. A total of 186 individuals were grouped according to the number of times they had episodes of P. vivax malaria. The cut-off values were the same as used for Table 1. There was a significant increase in the percentage of individuals containing IgG anti-AMA-1 in the groups with previous malaria episodes when compared with individuals without previous episodes of the disease (P < 0.05, Chi-Square test). No statistically significant difference was observed among the frequencies of sera from individuals containing IgG antibodies anti-VIR and anti-MSP1₁₉ in the different groups of individuals (P > 0.05, Chi-Square test).