A DOUBLE BLIND, RANDOMIZED, CONTROLLED, DOSE ESCALATION PHASE IB FIELD TRIAL IN 12 TO 24 MONTH OLD CHILDREN IN BURKINA FASO TO EVALUATE THE SAFETY AND IMMUNOGENICITY OF THE PLASMODIUM FALCIPARUM MEROZOITE SURFACE PROTEIN-3 LONG SYNTHETIC PEPTIDE (MSP 3-LSP) ADJUVANTED IN ALUMINIUM HYDROXIDE VERSUS ENGERIX B