This paper unpacks the effects of social networks on monthly county-level COVID19 vaccinations in the US. To parse out short-term community-level externalities where people help each other overcome immediate access barriers, from learning spillovers regarding vaccine efficacy that naturally take...

Over the last two decades, the number of delivering mothers using or dependent on opiates has increased dramatically, giving rise to a five-fold increase in the proportion of babies born with neonatal abstinence syndrome (NAS). First, the current study documents NAS trends in the United States...

Vaccination represents a canonical example of externalities in economics, yet there are few estimates of their magnitudes. I estimate social and externality benefits of influenza vaccination in two settings. First, using a natural experiment, I estimate the impacts of aggregate vaccination rates...

Governments worldwide are increasingly concerned about the booming CBD (cannabidiol) products. However, little is known about the impact of their liberalization. We study a unique case of unintended liberalization of a CBD-based product (light cannabis) that occurred in Italy in 2017. Using...

Can democratically elected politicians persuade their constituents to alter policy priorities? With little empirical support for this hypothesis to date, we propose that Rodrigo Duterte's inauguration speech on June 30, 2016 systematically shifted the Filipinos' policy agenda toward prioritizing...

Nonmedical exemptions from school-entry vaccine mandates are receiving increased policy and public health scrutiny. This paper examines how expanding the availability of exemptions influences vaccination rates in early childhood and academic achievement in middle school. We leverage 2003...

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,...

We investigate the effect of variations in the price of opium in Afghanistan on per capita dispensation of prescription opioids in the US. Quarterly county-level data for 2003-2016 indicate that reductions in opium prices significantly increase the quantity of opioids prescribed. The increase...

The opioid epidemic is a national public health emergency. As the number of fa- tal overdoses and drug abuse skyrockets, children of opioid-dependent parents are at increased risk of being neglected, abused or orphaned. While some studies have examined the effects of policies introduced by...

In this paper we investigate the dual role of supply restrictions and drug treatment in combating the concurrent rise of opioid abuse and suicide in the United States over the last two decades. We find that supply-side interventions decrease suicides in places with strong addiction-help...