After 6 months and thousands of hours looking through the literature on the most cost-effective and evidence-based global poverty interventions, our team determined that the winner is using text-message reminders to remind people of their upcoming vaccination appointments. This intervention has four randomized controlled trials (RCTs) finding a positive effect, two related Cochrane reviews, and estimates put it at a similar range of cost-effectiveness to some of the best charities in the world. If you would like to make a donation, thank you!

Looking to donate to Givewell-recommended charities? Please visit https://rcforward.org