<h3>Overview</h3> <p>For decades, global <span class="key-term" data-definition="Malaria – a mosquito‑borne parasitic disease causing fever, anaemia and death; a priority health issue in UPSC GS3 (Health).">malaria</span> control relied on reducing the vector population and treating infected individuals. Interventions such as <span class="key-term" data-definition="Bed nets – insecticide‑treated nets that provide personal protection against mosquito bites; a key public‑health tool (GS3: Health).">bed nets</span>, <span class="key-term" data-definition="Indoor residual spraying – application of long‑acting insecticides on interior walls to kill resting mosquitoes; widely used in malaria programmes (GS3: Health).">indoor residual spraying</span>, and effective antimalarial drugs have averted millions of deaths, especially among children in <span class="key-term" data-definition="Sub‑Saharan Africa – the region of Africa south of the Sahara Desert, bearing the highest malaria burden (GS3: Health).">sub‑Saharan Africa</span>.</p> <h3>Key Developments</h3> <ul> <li>Annual malaria mortality remains above <strong>500,000</strong> deaths, with the majority being children.</li> <li>Increasing <span class="key-term" data-definition="Insecticide resistance – the ability of mosquitoes to survive exposure to chemicals that previously killed them; undermines vector control (GS3: Health).">insecticide resistance</span> among mosquito vectors is reducing the efficacy of both bed nets and indoor spraying.</li> <li>The malaria parasite is developing <span class="key-term" data-definition="Drug resistance – genetic changes in the parasite that render standard antimalarial medicines ineffective; a major challenge for treatment (GS3: Health).">drug resistance</span>, limiting therapeutic options.</li> <li>Consequently, many endemic regions have witnessed a slowdown or reversal of earlier gains in malaria reduction.</li> </ul> <h3>Important Facts</h3> <p>The primary vector, <span class="key-term" data-definition="Mosquito – an insect that transmits malaria parasites (Plasmodium) through its bite; central to disease ecology (GS3: Health).">mosquito</span>, has adapted to survive on newer insecticide classes, prompting the World Health Organization to call for novel vector‑control strategies. Simultaneously, resistance to artemisinin‑based combination therapies (ACTs) is emerging, threatening the cornerstone of malaria treatment.</p> <h3>UPSC Relevance</h3> <p>Understanding the dynamics of <span class="key-term" data-definition="Malaria – a major public‑health challenge influencing health indicators, disease burden and development goals (GS3: Health).">malaria</span> aligns with GS3 topics on disease control, health‑system preparedness, and international cooperation. The issue also touches GS4 (Ethics) when evaluating equitable access to interventions, and GS1 (Geography) regarding the spatial distribution of disease risk in <span class="key-term" data-definition="Sub‑Saharan Africa – a region with distinct climatic and socio‑economic conditions affecting disease patterns (GS1: Geography).">sub‑Saharan Africa</span>.</p> <h3>Way Forward</h3> <ul> <li>Accelerate research into next‑generation insecticides and non‑chemical vector‑control tools such as genetic modification and biological agents.</li> <li>Strengthen surveillance for early detection of <span class="key-term" data-definition="Drug resistance – the emergence of parasite strains that no longer respond to standard medicines, necessitating alternative regimens (GS3: Health).">drug resistance</span> and adapt treatment protocols accordingly.</li> <li>Scale up distribution of long‑lasting insecticide‑treated nets with alternative active ingredients to counteract <span class="key-term" data-definition="Insecticide resistance – the reduced susceptibility of mosquitoes to existing chemicals, compromising control measures (GS3: Health).">insecticide resistance</span>.</li> <li>Promote integrated community‑based programmes that combine vector control, prompt diagnosis, and effective case management.</li> <li>Enhance funding and international collaboration to sustain momentum against malaria, ensuring that vulnerable populations, especially children, are protected.</li> </ul> <p>By addressing both vector and parasite resistance, India and other nations can preserve past achievements and move toward the WHO’s goal of malaria elimination.</p>