Is Partial Spraying the Way Forward?

Indoor residual spraying of insecticides is a tried-and-true method of malaria control—but a costly one, making scalability and sustainability a challenge.

A new study of An. gambiae mosquitoes in 8 communities in northern Ghana found that partial spraying—targeting only the upper walls and ceilings, where the mozzies tended to rest—worked just as well as full IRS, and was even more cost effective.
However, mozzies’ preferred hangouts vary by species, geographical location, and structure design, meaning local vector species behavior is key to assessing whether this method would work elsewhere, the researchers note.


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