Maps and metrics of insecticide-treated net access, use, and nets-per-capita in Africa from 2000-2020

Amelia Bertozzi-Villa, Caitlin A. Bever, Hannah Koenker, Daniel J. Weiss, Camilo Vargas-Ruiz, Anita K. Nandi, Harry S. Gibson, Joseph Harris, Katherine E. Battle, Susan F. Rumisha, Suzanne Keddie, Punam Amratia, Rohan Arambepola, Ewan Cameron, Elisabeth G. Chestnutt, Emma L. Collins, Justin Millar, Swapnil Mishra, Jennifer Rozier, Tasmin SymonsKatherine Twohig, T. Deirdre Hollingsworth, Peter W. Gething, Samir Bhatt

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Insecticide-treated nets (ITNs) are one of the most widespread and impactful malaria interventions in Africa, yet a spatially-resolved time series of ITN coverage has never been published. Using data from multiple sources, we generate high-resolution maps of ITN access, use, and nets-per-capita annually from 2000 to 2020 across the 40 highest-burden African countries. Our findings support several existing hypotheses: that use is high among those with access, that nets are discarded more quickly than official policy presumes, and that effectively distributing nets grows more difficult as coverage increases. The primary driving factors behind these findings are most likely strong cultural and social messaging around the importance of net use, low physical net durability, and a mixture of inherent commodity distribution challenges and less-than-optimal net allocation policies, respectively. These results can inform both policy decisions and downstream malaria analyses.

    Original languageEnglish
    Article number3589
    JournalNature Communications
    Volume12
    Issue number1
    Early online date11 Jun 2021
    DOIs
    Publication statusE-pub ahead of print - 11 Jun 2021

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