The Effects of Insecticide-Treated Nets (ITNs) on Plasmodium falciparum Infections in Kalumbila District, Zambia

Background: Malaria, caused by Plasmodium falciparum, is a severe infectious disease affecting rural regions with high transmission rates. According to the WHO, malaria remains a critical global health issue, with 229 million cases and 409,000 deaths annually, predominantly in the WHO African Region. In Zambia, a high transmission country, malaria significantly impacts public health and the economy. Objectives: This study assessed the impact of insecticide-treated nets (ITNs) on Plasmodium falciparum malaria infections in Kalumbila District by investigating local epidemiology, evaluating ITNs' effectiveness, and assessing the relationship between ITN usage and malaria incidence and prevalence. Methods: A mixed-methods approach combined quantitative data from the Kalumbila District Health Office with qualitative data from focus groups, interviews, and questionnaires. Quantitative analyses included chi-square (χ²), ANOVA, and correlational analysis. Results: High ITN coverage (over 80%) led to a 60% decrease in malaria cases (p<0.05). Significant associations (χ² = 5,472.09, df = 1, p < 0.05) and ANOVA (F = 0.023, p < 0.05) confirmed the impact of ITNs. Qualitative findings highlighted benefits like improved health and reduced mosquito bites but noted challenges such as ITN durability and cultural acceptance. Conclusions: In Kalumbila District, ITNs significantly reduce Plasmodium falciparum infections. Effectiveness depends on factors like durability, cultural acceptance, and socio-economic status. Continuous community education and integrated preventive measures are essential for maximizing impact.