This paper presents the results of a survey exploring the determinants of vacinees' confidence in COVID-19 vaccines and their motivations to become vaccinated. At the threatening rise of the highly infectious Omicron variant, in December 2021, we interviewed people in waiting lines of...

In 2006, Massachusetts enacted comprehensive health care reform which served as a model for the Affordable Care Act. I study the mortality effects of the reform using synthetic control estimation, relaxing two critical assumptions required to implement this method. The traditional approach...

The majority of COVID-19 vaccines currently available are typically administered in two doses, with a prescribed number of weeks separating the two doses. Because of uncertainty in vaccine supply, many vaccination managers have saved doses in inventory to ensure on-time second doses. However,...