COVID-19 pandemic represents an unprecedented global health crisis in the last 100 years.
Its economic, social and health impact continues to grow and is likely to end up as one of the …

We study targeted lockdowns in a multigroup SIR model where infection, hospitalization,
and fatality rates vary between groups—in particular between the “young,” the “middle …

We develop a multi-risk SIR model (MR-SIR) where infection, hospitalization and fatality
rates vary between groups—in particular between the “young”,“the middle-aged” and the …

The paper evaluates the dynamic impact of various policies adopted by US states on the
growth rates of confirmed Covid-19 cases and deaths as well as social distancing behavior …

We use aggregated data from Facebook to show that COVID-19 is more likely to spread
between regions with stronger social network connections. Areas with more social ties to two …

This study examines the productivity of working from home (WFH) practices during the
COVID‐19 pandemic. The results reveal that the mean WFH productivity relative to working …

We develop an econometric model of consumer panic (or panic buying) during the COVID-
19 pandemic. Using Google search data on relevant keywords, we construct a daily index of …

We use data on deaths in New York City, Madrid, Stockholm, and other world cities as well
as in various US states and other regions and countries to estimate, quickly and with limited …

This paper studies the SEIRD epidemic model for COVID-19. First, I show that the model is
poorly identified from the observed number of deaths and confirmed cases. There are many …

We describe the structure and use of epidemiology models of disease transmission, with an
emphasis on the susceptible/infected/recovered (SIR) model. We discuss high-profile …