A potential breakthrough in the fight against malaria is the availability of a new promising tool, the R21/Matrix-M™ malaria vaccine that has shown an efficacy of 75% to protect young children against clinical malaria in different epidemiological settings. WHO recommends its deployment in addition to RTS,S/ASO1 and other effective interventions.
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http://dx.doi.org/10.1093/jtm/taad140 | DOI Listing |
PLoS Med
January 2025
Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
In this Perspective article, Lorenz von Seidlein outlines the promise of two malaria vaccines, and discusses some of the considerations for their roll out.
View Article and Find Full Text PDFFront Parasitol
April 2024
Centre for Malaria Elimination, Institute of Tropical Medicine, Mount Kenya University, Thika, Kenya.
The Circumsporozoite Protein (PfCSP) has been used in developing the RTS,S, and R21 malaria vaccines. However, genetic polymorphisms within compromise the effectiveness of the vaccine. Thus, it is essential to continuously assess the genetic diversity of , especially when deploying it across different geographical regions.
View Article and Find Full Text PDFLancet Microbe
December 2024
Jenner Institute, University of Oxford-NIHR Oxford Biomedical Research Centre, Oxford, UK. Electronic address:
Background: Malaria remains a substantial public health burden among young children in sub-Saharan Africa and a highly efficacious vaccine eliciting a durable immune response would be a useful tool for controlling malaria. R21 is a malaria vaccine comprising nanoparticles, formed from a circumsporozoite protein and hepatitis B surface antigen (HBsAg) fusion protein, without any unfused HBsAg, and is administered with the saponin-based Matrix-M adjuvant. This study aimed to assess the safety and immunogenicity of the malaria vaccine candidate, R21, administered with or without adjuvant Matrix-M in adults naïve to malaria infection and in healthy adults from malaria endemic areas.
View Article and Find Full Text PDFLancet Microbe
January 2025
Jenner Institute, University of Oxford and the NIHR Oxford Biomedical Research Centre, Oxford, UK.
Background: R21 is a novel malaria vaccine, composed of a fusion protein of the malaria circumsporozoite protein and hepatitis B surface antigen. Following favourable safety and immunogenicity in a phase 1 study, we aimed to assess the efficacy of R21 administered with Matrix-M (R21/MM) against clinical malaria in adults from the UK who were malaria naive in a controlled human malaria infection study.
Methods: In this open-label, partially blinded, phase 1-2A controlled human malaria infection study undertaken in Oxford, Southampton, and London, UK, we tested five novel vaccination regimens of R21/MM.
Malar J
January 2025
Department of Information and Communication Technology, Faculty of Computing, University of Delta, Agbor, Delta State, Nigeria.
Malaria remains a significant global health challenge, with nearly half of the world's population at risk of infection. In 2022 alone, malaria claimed approximately 608,000 lives, with 76% of these fatalities occurring in children under the age of five, underscoring the disease's disproportionate impact on vulnerable populations. Africa bears the highest burden, accounting for 94% of global malaria cases.
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