Taylor & Francis Group Jun 15 2026 A major analysis of 25 studies across Africa and Asia finds that insecticide-treated nets cut malaria cases by up to 68% - but highlights challenges that threaten to undermine their long-term impact. The study, published in the peer-reviewed journal Infectious Diseases , confirms that insecticide-treated nets (ITNs) continue to provide strong protection against malaria – but reveals that their effectiveness varies considerably between regions and communities.