A 2019 study published in the Nature Journal highlights atovaquone, a medication widely used to treat malaria, as a potential solution to insecticide resistance in mosquito control efforts.
Researchers found that when mosquitoes come into contact with atovaquone, the compound prevents the development of Plasmodium falciparum parasites within their bodies. This mechanism differs from traditional insecticides that kill mosquitoes, instead targeting the parasite's lifecycle.
Flaminia Catteruccia, a Harvard TH Chan School of Public Health professor and study co-author, explained: "By eliminating malaria parasites within the mosquito rather than killing the mosquito itself, we can circumvent resistance and effectively prevent transmission." The approach preserves mosquito populations while blocking disease spread.
Experiments involved exposing Anopheles mosquitoes to atovaquone-coated surfaces, simulating contact with treated bed nets. At concentrations as low as 100 mol/m², the compound completely halted parasite development after six minutes of exposure—mirroring natural mosquito-net interactions.
Douglas Paton, lead researcher, noted that integrating atovaquone with conventional bed nets could significantly reduce malaria transmission across Africa. "Results showed appreciable reductions under almost any conditions we tested," he said.
Despite these advancements, Kenya's Ministry of Health acknowledges ongoing challenges. Njagi Kiambo, a senior official, stated: "Bed nets remain central to malaria control, though their efficacy is declining due to resistance." Current nets treated with pyrethroids still provide partial protection, reducing transmission by 50% when used properly.
The 2018 Kenya Economic Survey identified malaria as the second leading cause of death, with 17,000 annual fatalities. Health experts warn actual numbers may be higher, as many deaths occur outside formal healthcare systems. Children under five and pregnant women face the highest risks, prompting calls for continued bed net use in high-risk areas.
