Limiting the ability of mosquitoes or other insects to spread disease is one of the core strategies to controlling and eliminating malaria and other vector-borne diseases, such as dengue and lymphatic filariasis, in endemic areas. We take on a range of vector control activities and continuously look for new and innovative ways to prevent vectors from transmitting diseases to humans.
The use of long lasting insecticidal nets (LLINs) remains one of the most effective methods of preventing malaria and we are focused on ensuring. We focus on ensuring that LLIN coverage is high through both public and private channels, using various approaches and techniques to ensure demand for nets remains strong.
We are developing context-specific models for continuous distribution of LLINs through routine channels such as antenatal care clinics, schools and community-based delivery systems, and through routine immunisation. We also engage the commercial sector to ensure provision via private channels. We are currently carrying out comprehensive efforts at scale in several countries, including Nigeria and Uganda, to achieve both high and sustained impact.
We also work to improve prevention of malaria transmission outside human dwellings (outdoor transmission) by promoting methods to reduce contact with potential vectors. For example, our ‘positive deviance’ behaviour change projects in Asia encourage existing behaviours to prevent malaria and dengue found within communities to be more widely adopted. We also explore alternative methods to reduce outdoor transmission, such as the use of insecticide treated clothing for those who work at night.
Indoor residual spraying, which we support through research, is another key malaria prevention method for disrupting the malaria lifecycle by targeting mosquitoes that rest indoors after feeding.
Through our Beyond Garki multi-country project we have been engaged in a long-term analysis of changes in vector behaviour as interventions are deployed to reduce malaria transmission intensity. This provides quality and context specific data allowing for the better targeting of effective interventions.
Our other vector control priorities are tackling pyrethroid resistance.