World health organization

10 facts on malaria

Person spraying insecticide indoors
WHO/V. Buj

Indoor residual spraying is the most effective way to rapidly reduce malaria transmission

The full potential of indoor residual spraying is obtained when at least 80% of houses in targeted areas are sprayed. Indoor spraying with insecticides kills the mosquito vector and is effective for 3–6 months, depending on the insecticide used and the type of surface on which it is sprayed. Longer-lasting forms of insecticides are under development.

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