In April 2024, GiveWell commissioned Rethink Priorities to conduct research on mosquito nets. The aim was to briefly evaluate whether some nets that are distributed but not used could be causing harm if they are being used for fishing. This rapid research focused on whether greater demand for existing fish stocks could lead to depletion and disrupt long-term sustainability and food security, which we refer to as “overfishing”.

This research updated GiveWell’s previous literature review on the long-term income effects of childhood malaria to determine whether the assumption that income in adulthood decreases by 1% per childhood malaria case should be adjusted and whether any further evidence should be considered.

This report is a broad overview of larval source management, including evidence for effectiveness, room for more funding, and coverage by existing implementers.

This summary aims to understand whether and how the “double treatment” parameter in GiveWell’s model on vitamin A supplementation should be updated, and to produce estimates for additional countries of interest.

In 2019, there were about 1.2 million deaths due to road injuries—about 90% of which occurred in low- and middle-income countries. In this report, researchers reviewed case studies of key time periods in China and Vietnam to better understand the relative impact of (philanthropically-funded) policy changes versus other factors.

The primary focus of the report is to provide a review of World Health Organization Prequalification (WHO-PQ). The researchers focused mostly on how it works and how it’s funded, as well as how it came about and how it could be improved for a greater global health impact.

This report is a “shallow” investigation commissioned by Open Philanthropy. This primary focus of the report is to assess weather forecasting as a potential agricultural intervention in low- and lower-middle income countries and to examine the cost-effectiveness of different interventions.