Influenza vaccination could be a cost-effective way to reduce costs in terms of human lives and productivity losses …, but low take-up rates and vaccination unintentionally causing moral hazard may decrease its benefits. We ran a natural … field experiment in cooperation with a bank in Ecuador, where we modified its vaccination campaign. Experimentally …

In this study, we investigate whether COVID-19 deaths that occurred before vaccination rollouts impact subsequent … vaccination take-up. We use data on local vaccination rates and COVID-19-related deaths from England measured at high geographic … granularity. We nd that vaccination take-up as of November 2021 is positively associated with pre-vaccine COVID-19- related deaths …