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Insecticide-treated bed nets and curtains for preventing malaria
1Public Health and Epidemiology, Swiss Tropical Institute, Basel, Switzerland, 4002.
The Cochrane Database of Systematic Reviews
|April 24, 2004
Summary
Insecticide-treated nets (ITNs) significantly reduce childhood malaria mortality and illness. Protecting 1000 children with ITNs can save approximately 5.5 lives annually, demonstrating their vital role in malaria prevention.
Area of Science:
- Public Health
- Infectious Disease Control
- Tropical Medicine
Background:
- Malaria remains a major global health burden, particularly in sub-Saharan Africa.
- Preventive measures are crucial, with insecticide-treated nets (ITNs) being a primary strategy for widespread deployment in endemic regions.
Purpose of the Study:
- To evaluate the effectiveness of insecticide-treated nets (ITNs) and curtains.
- Assessed impact on mortality, malaria illness (severe and mild), parasitemia, anemia, and spleen rates.
Main Methods:
- Systematic review of randomized controlled trials (individual and cluster).
- Searched multiple databases (Cochrane, MEDLINE, EMBASE, LILACS) and contacted manufacturers and researchers.
- Included trials comparing ITNs/curtains to untreated nets or no nets; excluded trials solely on pregnant women.
Main Results:
- ITNs demonstrated a 17% protective efficacy against child mortality compared to no nets.
- Reduced uncomplicated malaria episodes by 39-62% and severe malaria by 45%.
- Improved children's hemoglobin levels by 1.7% and reduced parasite prevalence, high parasitemia, and splenomegaly.
Conclusions:
- Insecticide-treated nets (ITNs) are highly effective in reducing childhood malaria mortality and morbidity.
- Widespread ITN access is advocated, but requires significant financial, technical, and operational investment for universal deployment.