Malaria is a life-threatening infectious disease affecting humans and other animals. It is caused by parasites spread through the bites of infected female mosquitoes. In 2019, there were 229 million cases of malaria and 409,000 deaths caused by this disease worldwide (World Health Organization 2020: xiv-xv).

Multiple randomized controlled trials show that mass distribution of long-lasting insecticide-treated nets reduces malaria fevers and prevents deaths from the disease (GiveWell 2018a). Despite the existence of effective prevention methods, tens of millions of people are still unprotected from malaria, and the funding gap for net distributions is in the hundreds of millions of dollars.

The Against Malaria Foundation provides funding for distribution of bed nets to high-risk populations. GiveWell estimates that it costs $4.59 to purchase and distribute an AMF-funded net (GiveWell 2020), and that a marginal donation of $4,106 to AMF is expected to avert the death of a child under five (GiveWell 2020b; for caveats, see GiveWell 2017)....

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