indoor residual spraying (IRS)

The study suggests that the contribution of IRS to malaria and mosquito control is not entirely perceived by the beneficiaries, and that other as cost effective interventions such as insecticide-treated nets are favoured over IRS.

The chlorfenapyr IRS component was largely responsible for controlling pyrethroid-resistant mosquitoes and the LLIN component was largely responsible for blood feeding inhibition and personal protection.

Both An. gambiae s.s. and An. funestus were controlled effectively with the DDT-based IRS programme in Zambezia, reducing disease transmission and burden.

The observed multiple-resistance coupled with the occurrence of high kdr frequency in populations of An. arabiensis could profoundly affect the malaria vector control programme in Ethiopia.

By definition, eradication of human malaria parasites globally requires that intervention options are available that can eliminate transmission anywhere in the world.