Since 2001, an aid consortium known as Gavi has accounted for over half of vaccination expenditure in the 75 eligible countries with an initial per capita GNI below $1,000. Regression discontinuity (RD) estimates show aid significantly displaced other immunization efforts and failed to increase...

Can financial incentives, public health messages and other behavioral nudges -approaches deployed by state and local governments, employers, and health systems - increase SARS-CoV-2 vaccination rates among the vaccine hesitant in the US? In mid-2021, we randomly assigned unvaccinated members of...

Can financial incentives, public health messages and other behavioral nudges –approaches deployed by state and local governments, employers, and health systems – increase SARS-CoV-2 vaccination rates among the vaccine hesitant in the US? In mid-2021, we randomly assigned unvaccinated members...