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Updated: May 8, 2026

Mass Production of Genetically Modified Aedes aegypti for Field Releases in Brazil

Mass Production of Genetically Modified Aedes aegypti for Field Releases in Brazil

Published on: January 4, 2014

Mosquito larval source management for controlling malaria.

Lucy S Tusting¹, Julie Thwing, David Sinclair

¹Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK.

The Cochrane Database of Systematic Reviews

|August 30, 2013

Summary

This summary is machine-generated.

Larval source management (LSM) effectively reduces malaria incidence and parasite prevalence, offering a valuable public health strategy. This approach targets mosquito larvae in aquatic habitats, complementing existing malaria control methods like insecticide-treated bed nets and indoor residual spraying.

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Area of Science:

Public Health
Vector-Borne Disease Control
Environmental Health

Background:

Malaria remains a significant global health burden, particularly in sub-Saharan Africa.
Long-lasting insecticide-treated bed nets (LLINs) and indoor residual spraying (IRS) are primary malaria control tools targeting adult mosquitoes.
Larval source management (LSM) offers an alternative strategy by targeting mosquito larvae in their aquatic breeding sites.

Purpose of the Study:

To evaluate the effectiveness of mosquito larval source management (LSM) as a malaria prevention strategy.
To synthesize evidence from various study designs assessing LSM interventions for malaria control.

Main Methods:

A comprehensive literature search was conducted across multiple databases (Cochrane, MEDLINE, EMBASE, LILACS) and handsearched sources up to October 2012.
Included studies were cluster-RCTs, controlled before-and-after trials with baseline data, and randomized cross-over trials comparing LSM with no LSM.
Data extraction and risk of bias assessment were performed independently by at least two authors.

Main Results:

Thirteen studies (four cluster-RCTs, eight controlled before-and-after, one cross-over) evaluated various LSM methods, including habitat modification, manipulation, and larviciding.
In Sri Lanka, larviciding reduced malaria incidence by approximately 75% (moderate quality evidence).
LSM interventions, including larviciding and habitat modification, showed an average reduction in parasite prevalence of around 67% across five studies (moderate quality evidence).

Conclusions:

Larval source management (LSM) is a viable policy option for reducing malaria morbidity in urban and rural areas, complementing LLINs and IRS.
The effectiveness of LSM is contingent on targeting a significant proportion of larval habitats.
Further research is required to determine the feasibility and appropriateness of LSM in rural African settings with extensive larval habitats.