Figure 1

IgG antibodies against Plasmodium falciparum schizont extract measured in July 2003. Children received, in September-October-November 2002, either intermittent preventive treatment (IPTc) with artesunate + sulphadoxine-pyrimethamine or placebo (controls). Bars indicate the median value for each group. The two groups were compared using a bivariate Mann-Whitney test.