Prevalences (A) and titers (B) of IgG subclasses distribution in 24 peptides derived from MSP3.3, MSP3.4, MSP3.7, and MSP3.8 in serum samples of malaria-exposed individuals (n = 25; age range, 2 to 54 years; mean age, 16.86 years) from Dielmo village. Bars indicate the standard errors of the mean.