Clinical trials

This study will measure immune persistence of the NmCV-5 more than 5 years after a single dose vaccination in participants 2-29 years of age in Mali and The Gambia.

This is a Phase 2, randomized, double-blind, controlled study designed to evaluate the safety, tolerability, immunogenicity, vaccine efficacy, and functional activity of Pfs230D1-CRM197 conjugate vaccine with R21 nanoparticle vaccine formulated on Matrix-M1. Participants (9-50 years of age) will be drawn from Bancoumana, Mali and the surrounding areas.

This is an observational case-control study to assess the effectiveness of the R21/Matrix-M vaccine against severe malaria, clinical malaria (in high transmission perennial areas), and to assess if the R21 vaccine recipients are at an increased risk of deaths (all-cause). Clinical malaria, severe malaria and death (all-cause) cases will be enrolled in study. For each case (severe or death) 4 controls matched for age and neighborhood will be enrolled whereas for clinical malaria case, 1 matched control will be enrolled. 1. Proportion of vaccinated and unvaccinated children amongst Severe Malaria Cases caused by P. falciparum. 2. Proportion of vaccinated and unvaccinated children amongst Clinical Malaria Cases in high-transmission perennial areas caused by P. falciparum. 3. Proportion of vaccinated and unvaccinated children in cases of death (all cause) 4. Exploratory effectiveness endpoint: Proportion of vaccinated and unvaccinated children in the hospitalized clinical and severe malaria cases.