Infectious diseases and human behavior are intertwined. On one side, our movements and
interactions are the engines of transmission. On the other, the unfolding of viruses might …

The purpose of this systematic review and meta-analysis is to determine the effect of
lockdowns on COVID-19 mortality based on available empirical evidence. Lockdowns are …

INTRODUCTION Mask usage remains low across many parts of the world during the COVID-
19 pandemic, and strategies to increase mask-wearing remain untested. Our objectives …

Background Estimates of demographic metrics are crucial to assess levels and trends of
population health outcomes. The profound impact of the COVID-19 pandemic on …

The collapse of economic activity in 2020 from COVID-19 has been immense. An important
question is how much of that collapse resulted from government-imposed restrictions versus …

Objectives To evaluate which non-pharmaceutical interventions (NPIs) have been more and
less effective in controlling the COVID-19 pandemic. Methods We performed a systematic …

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 …

Various non-pharmaceutical interventions were adopted by countries worldwide in the fight
against the COVID-19 pandemic with adverse socioeconomic side effects, which raises the …

The COVID-19 pandemic has upended health and living standards around the world. This
article provides an interim overview of these effects, with a particular focus on low-and …

Background National rates of COVID-19 infection and fatality have varied dramatically since
the onset of the pandemic. Understanding the conditions associated with this cross-country …