Levels of IgM were higher in the late exposure and control groups, who were exposed to infection between months 5.5 and 10.5, compared to the early exposure group, who were under chemoprophylaxis during that period (GM, 95% CI; EBA-175: 0.45, 0.42-0.49 and 0.49, 0.45-0.53 vs 0.42, 0.38-0.46, respectively, p = 0.0469; AMA-1: 0.40, 0.37-0.43 and 0.40, 0.37-0.42 vs 0.35, 0.32-0.39, p = 0.0543; MSP-119: 0.43, 0.39-0.47 and 0.46, 0.41-0.52 vs 0.40, 0.36-0.43, p = 0.0885) (Figure 1). Here, CD40LG is linked to infection.