Figure 3: Frequencies of subclasses IgG responders agains a panel of variants of PvMSP1 Block 2. Percentages of subclasses responders agains ICB2-5 and a panel of major allelic variants of Block 2 expressed as recombinant proteins are shown between subjects who have had malaria in last 90 days and symptomless P. vivax-infected individuals from Rio Pardo, an agricultural settlement of Rio Pardo, Presidente Figueiredo municipality, northeast region of Amazonas State, Brazil [42].