In recent developments, the fight against malaria has seen significant advancements, particularly in the realm of vaccination.
Over the past year, the rollout of malaria vaccines in Africa has achieved notable milestones. Nearly 10 million doses of the malaria vaccine were delivered across the continent during the first year of routine immunization, according to the Gavi vaccine alliance. This initiative, which began in January 2024, has expanded routine malaria vaccination to 17 countries, including Ghana, Kenya, Malawi, and Cameroon. The RTS,S and R21/Matrix-M vaccines, recommended by the World Health Organization (WHO), have shown promising results, with substantial reductions in severe malaria illness and hospitalizations, and a 13% drop in mortality among children[1].
The impact of these vaccines is particularly significant in high-burden countries like Cameroon, where malaria claims over 13,000 lives annually and accounts for nearly 30% of all hospital consultations. Gavi's efforts aim to consistently reach those at the highest risk, with plans to expand vaccination programs to up to eight more African countries this year, potentially protecting an additional 13 million children. By 2030, Gavi aims to help countries protect a further 50 million children with four doses of the malaria vaccine[1].
While current vaccines like RTS,S and R21/Matrix-M offer moderate protection, researchers are working on next-generation vaccines with enhanced efficacy. A novel malaria vaccine, PfSPZ-LARC2, developed by the Seattle Children’s Research Institute and Sanaria, has shown promising results in animal studies. This genetically engineered vaccine, which targets the liver stage of the parasite, has demonstrated 100% protection against infection in animal models. Clinical trials for PfSPZ-LARC2 are set to begin this summer and will run through 2025 in the U.S., Germany, and Burkina Faso[2].
In addition to vaccine development, scientists are also exploring new treatments to combat malaria. Recent research using sophisticated synchrotron techniques has identified a compound, IMP-1088, that targets the N-myristoyltransferase enzyme in the malaria-causing parasite Plasmodium vivax. This compound has the potential to disrupt the parasite's lifecycle and is being developed as a cost-effective and less toxic treatment option[4].
However, not all vaccine trials have been without hiccups. The U.S. FDA recently placed a clinical hold on BioNTech's Phase I/II trial of its mRNA-based malaria vaccine, BNT165e, due to unspecified changes required by the FDA. BioNTech is working to address these issues and will reassess the trial's next steps. Despite this setback, the company remains committed to expanding its vaccine development capabilities, including a deal with the Coalition for Epidemic Preparedness Innovations (CEPI) to establish an mRNA vaccine manufacturing site in Rwanda[5].
These developments underscore the ongoing efforts to combat malaria, a disease that still claims nearly 600,000 lives annually, predominantly in Africa. As research and vaccination programs continue to evolve, there is growing hope for more effective tools in the fight against this devastating disease.