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Malaria Vectors: Biology, Geographical Distribution And Challenges

July 20, 2026
Mafama Siribié
UD74366SBI83531.

Malaria Vectors: Biology, Distribution, and Resistance Challenges

This review explores the biology, distribution, and control of malaria vectors, primarily Anopheles mosquitoes, which transmit Plasmodium parasites causing malaria. It highlights the importance of understanding vector behavior, ecological adaptations, and geographic spread for effective control strategies. Despite progress with tools like long-lasting insecticidal nets (LLINs) and indoor residual spraying (IRS), insecticide resistance poses a significant challenge, undermining control efforts. Field experiences from Burkina Faso demonstrate the effectiveness of surveillance and resistance monitoring. Future strategies should focus on innovative tools, genetic technologies, and climate-informed surveillance to sustain progress toward malaria elimination amidst resistance and environmental changes

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Doctorate in Global Health

Masters in Public Health

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This article provides a comprehensive overview of malaria vectors, focusing on their biology, geographical distribution, and the challenges faced in controlling their populations. Malaria transmission is primarily driven by female Anopheles mosquitoes, which undergo a four-stage life cycle including eggs, larvae, pupae, and adults. The distribution of different Anopheles species varies across regions, with Africa hosting the most efficient vectors such as Anopheles gambiae, while other regions are dominated by species like Anopheles stephensi and Anopheles darlingi. Control measures mainly include long-lasting insecticidal nets and indoor residual spraying, which have significantly reduced malaria cases over recent decades.
However, the emergence of insecticide resistance, caused by mechanisms like metabolic, target-site, and behavioral resistance, threatens the effectiveness of these interventions. Field studies from Burkina Faso illustrate the importance of continuous surveillance, resistance monitoring, and adaptive control strategies. Efforts are underway to develop novel tools such as dual-active ingredient nets and genetic vector control technologies like gene drives. Climate change is also recognized as a factor influencing vector distribution and transmission dynamics, potentially expanding malaria risk to new areas.
To sustain progress toward eliminating malaria, future strategies must integrate innovative control methods, enhanced surveillance, and regional collaboration. The article emphasizes that ongoing investment in research, resistance management, and environmental adaptation will be critical in overcoming current barriers and achieving long-term malaria control and elimination goals.

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