Fig. 6

Numbers of Spots forming units of IFN-γ in the population and per group. The graph demonstrates the numbers of adjusted SFU of IFN-γ for each of the 6 tested pools using the entire population and each studied group. The dotted red line represents the mark of 20 SFU, values above this line indicate individuals capable of producing IFN-γ against the respective pool. The infected group is represented in pink, the exposed with previous malaria infections in blue, and the exposed without previous malaria infections in orange. The red dotted line separates responders from non-responders and represents the mark of adjusted 20 SFU. Analyses using the number o SFU were done by Kruskal-Wallis test and Dunn’s multiple comparison test.