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Mosquitocidal effect of ivermectin-treated nettings and sprayed walls on Anopheles gambiae s.s.

Article scientifique 2024 Anglais

Résumé

Ivermectin (IVM) has been proposed as a new tool for malaria control as it is toxic on vectors feeding on treated humans or cattle. Nevertheless, IVM may have a direct mosquitocidal effect when applied on bed nets or sprayed walls. The potential for IVM application as a new insecticide for long-lasting insecticidal nets (LLINs) and indoor residual spraying (IRS) was tested in this proof-of-concept study in a laboratory and semi-field environment. Laboratory-reared, insecticide-susceptible Kisumu Anopheles gambiae were exposed to IVM on impregnated netting materials and sprayed plastered- and mud walls using cone bioassays. The results showed a direct mosquitocidal effect of IVM on this mosquito strain as all mosquitoes died by 24 h after exposure to IVM. The effect was slower on the IVM-sprayed walls compared to the treated nettings. Further work to evaluate possibility of IVM as a new insecticide formulation in LLINs and IRS will be required.

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Hamid‐Adiamoh, M., Muhammad, A., Assogba, B., Soumare, H., Jadama, L., Diallo, M., D’Alessandro, U., Ndiath, M., Erhart, A., Amambua‐Ngwa, A. (2024). Mosquitocidal effect of ivermectin-treated nettings and sprayed walls on Anopheles gambiae s.s.. https://doi.org/10.1038/s41598-024-63389-x

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Auteur(s)

Majidah Hamid‐Adiamoh Abdul Khalie Muhammad Benoît Sessinou Assogba Harouna Massire Soumare Lamin Jadama Moussa Diallo Umberto D’Alessandro Mamadou Ousmane Ndiath Annette Erhart Alfred Amambua‐Ngwa

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