Volunteers will be recruited into one of four groups (n=8+1 per group) at the Centre for Clinical Vaccinology and Tropical Medicine (CCVTM), Oxford. Volunteers in groups 1, 2 and 4 will be followed up for a total of approximately 12 months. There will be 3 sentinel participants in each group (and for each successive vaccination), which will require an independent safety review prior to each successive vaccination. Group 3 is not a first-in-human group and so can be recruited at any time and participants will be followed up for a total of approximately 20 months from first vaccination. All volunteers will be given 10 µg R78C and/or 10 µg RH5.1 soluble protein in combination with 50 µg of Matrix-M via intramuscular (IM) injection in the deltoid region of the non-dominant arm.
This is an open-label, single-centre Phase I P. falciparum blood-stage vaccine trial to assess the safety and immunogenicity and efficacy of the candidate malaria vaccines R78C and RH5.1 formulated in adjuvant Matrix-M