Fig. 1From: Effect of 4 years of seasonal malaria chemoprevention on the acquisition of antibodies to Plasmodium falciparum antigens in Ouelessebougou, MaliAntibody levels expressed as optic density in children who received SMC for 2 years and children and in those who received SMC for 4 years. The number of children in each group are as follow: SMC 2 years, n = 242 and SMC 4 years, n = 219Back to article page