It was of interest to determine whether or not multiplicity of infection (MOI), and the numbers of different MSP1 types affected either the total amount of MSP119-specific antibody or of antibody that competed with the mAbs, and therefore the number of msp1 sequence block 2 types in the samples was used as a marker for MOI and MSP1 polymorphism in each individual. This evidence concerns the gene ATAD1 and infection.