Countries restrict the overall extent of international travel and migration to balance the expected costs and benefits of mobility. Given the ever-present threat of new, future pandemics, how should permanent restrictions on mobility respond? A simple theoretical framework predicts that reduced...

Infectious disease outbreaks such as COVID-19 pose significant public health threats and challenges worldwide due to their high transmissibility and potentially severe symptoms and complications. Although public health interventions such as social distancing and lockdown can slow the disease...