The GiveWell Blog

Podcast Episode 29: Behind the Analysis — Assessing Past Malaria Nets Grants

GiveWell’s research doesn’t end once we’ve made a grant. We evaluate a subset of completed grants, comparing what we thought would happen to what actually took place, then try to use what we learn to improve our future funding decisions. Over the past year, we’ve formalized and expanded this work, publishing comprehensive “lookbacks” for select grants.

A recent lookback on grants GiveWell made to fund insecticide-treated net distributions supported by the Against Malaria Foundation (AMF) in the Democratic Republic of Congo (DRC) illustrates the growing capacity of GiveWell’s research team. We drew on multiple independent data sources, funded qualitative interviews to gather more information, and conducted a novel empirical analysis to deepen our confidence.

In this episode, based on a conversation originally aired on GiveWell’s internal podcast for staff*, GiveWell’s co-founder and CEO Elie Hassenfeld provides additional context while GiveWell’s Chief Research and Program Officer Teryn Mattox dives deep into the details with Program Director Alex Cohen and Researcher Steven Brownstone, examining how we conducted the lookback, what we found, and how what we learned may shape our future nets grantmaking.

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GiveWell Opens RFI for Malaria Pilots and Research

GiveWell is launching a new request for information (RFI) to expand and strengthen our malaria grantmaking in Africa and help our donors make a greater impact. Expressions of interest can be submitted through one of two tracks, the first for malaria chemoprevention and vector control pilot programs and the second for research and evaluation. Submissions are due June 24.

Malaria kills around 600,000 people annually, mostly children under five in Africa. To date, GiveWell has directed more than $1 billion in donations to malaria prevention programs. As our research capacity grows, this RFI aims to pilot promising malaria prevention strategies and generate evidence to address a range of questions in malaria prevention and epidemiology.

We’d like to reach as many organizations as possible—please share with your network and consider applying!

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April 2026 Update

Every month we send an email newsletter to our supporters sharing recent updates from our work. We publish selected portions of the newsletter on our blog to make this news more accessible to people who visit our website. For key updates from the latest installment, please see below!

If you’d like to receive the complete newsletter in your inbox each month, you can subscribe here.

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Podcast Episode 28: Evaluating and Funding a New Kind of Grant (Clubfoot Treatment)

Clubfoot, a congenital condition where children are born with one or both feet twisted inward, affects roughly one in 800 newborns globally. Most of those cases are in low- and middle-income countries, where only about 20% of children with clubfoot receive treatment. While most donations to GiveWell are directed to programs that reduce child mortality, our growing research capacity over the last several years has expanded what we’re able to evaluate and fund. One outcome of that work is that we’re better able to direct donations to highly cost-effective programs addressing disabling conditions, like clubfoot, and meaningfully improve quality of life.

In this episode, GiveWell CEO and co-founder Elie Hassenfeld speaks with Program Officer Meika Ball about GiveWell’s grant to MiracleFeet, an organization that expands access to clubfoot treatment. Their conversation walks through MiracleFeet’s program, how we estimated its cost-effectiveness, and Meika’s recent site visit to see the program in action in Côte d’Ivoire.

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Podcast Episode 27: Scrutinizing One of Our Longest-Funded Programs

Vitamin A supplementation is one of the programs GiveWell has supported the longest, and we’re currently funding it in many African countries. The program has an unusually strong evidence base for reducing child mortality, with multiple randomized controlled trials. Yet, as is the case for most global health programs, the evidence for vitamin A supplementation has complex, unresolved questions, such as how well findings from decades-old trials apply today and the extent to which existing research has been influenced by publication bias. As GiveWell’s research team has grown over the last several years, we have expanded our capacity to carefully research these questions.

In this episode, GiveWell CEO and co-founder Elie Hassenfeld speaks with Senior Researcher Stephan Guyenet about the evidence base for vitamin A supplementation, the complications in applying that evidence to our funding decisions, and how GiveWell has improved our cost-effectiveness estimates for the program.

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March 2026 Updates

Every month we send an email newsletter to our supporters sharing recent updates from our work. We publish selected portions of the newsletter on our blog to make this news more accessible to people who visit our website. For key updates from the latest installment, please see below!

If you’d like to receive the complete newsletter in your inbox each month, you can subscribe here.

Read more