The journey toward a viable malaria vaccine, initiated in 1965, reached a major milestone in 2021 with the WHO’s endorsement of RTS,S/AS01, a recombinant protein-based malaria vaccine. This progress continued with the 2023 approval of the R21/Matrix-M vaccine, which is more cost-effective, more potent due it is higher protein content, and easier to manufacture. Though these achievements signal hope, malaria’s intricate life cycle and its prevalence in underprivileged regions make vaccine development and equitable distribution challenging. This review explains the lifecycle of malaria and explores the evolution of various treatment strategies aimed at reducing malaria-related mortality. This scoping review aims to provide a comprehensive overview of malaria vaccines, examining their development, efficacy, safety, and implementation challenges. Using a structured literature search across PubMed, Web of Science, and Scopus, we identified key themes related to malaria vaccines trials, policy implications, and future research needs. Peer-reviewed publications on PubMed, Scopus, and Web of Science from 1970 to 2024 were searched without any limitations. Search and Boolean search terms were modified to include terms like “malaria vaccines”, “malaria vaccination”, “malaria immunisation”, “malaria immunisation AND malaria-endemic countries”, “malaria endemic low-income countries AND malaria control”, “malaria public health control”, “malaria chemoprophylaxis AND early diagnosis of malaria”, “screening for malaria”, and “laboratory diagnosis of malaria in endemic countries” in order to find pertinent studies. Preliminary insights suggest that although vaccines are crucial, comprehensive strategies involving health education, hygiene, and timely medical intervention remain essential to malaria control.

Next-generation sequencing (NGS) and the technique of DNA metabarcoding have provided more efficient and comprehensive options for testing water quality compared to traditional methods. Recent studies have shown the efficacy of DNA metabarcoding in characterizing the bacterial microbiomes of varied sources of drinking water, including rivers, reservoirs, wells, tanks, and lakes. We asked whether DNA metabarcoding could be used to characterize the microbiome of different private sources of stored freshwater on the Caribbean Island nation of Antigua and Barbuda. Two replicate water samples were obtained from three different private residential sources in Antigua: a well, an above-ground tank, and a cistern. The bacterial microbiomes of different freshwater sources were assessed using 16S rRNA metabarcoding. We measured both alpha diversity (species diversity within a sample) and beta diversity (species diversity across samples) and conducted a taxonomic analysis. We also looked for the presence of potentially pathogenic species. Major differences were found in the microbiome composition and relative abundances depending on the water source. A lower alpha diversity was observed in the cistern sample compared to the others, and distinct differences in the microbiome composition and relative abundance were noted between the samples. Notably, pathogenic species, or genera known to harbor such species, were detected in all the samples. We conclude that DNA metabarcoding can provide an effective and comprehensive assessment of drinking water quality and has the potential to identify pathogenic species overlooked using traditional methods. This method also shows promise for tracing the source of disease outbreaks due to waterborne microorganisms. This is the first study from small island countries in the Caribbean where metabarcoding has been applied for assessing freshwater water quality.