Beginning in December 2019, the world faced a critical new public health stressor with the
emergence of SARS-CoV-2. Its spread was extraordinarily rapid, and in a matter of weeks …

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 …

Background The first COVID-19 vaccine outside a clinical trial setting was administered on
Dec 8, 2020. To ensure global vaccine equity, vaccine targets were set by the COVID-19 …

Background Mass vaccination campaigns to prevent coronavirus disease 2019 (Covid-19)
are occurring in many countries; estimates of vaccine effectiveness are urgently needed to …

INTRODUCTION Governments across the world have implemented a wide range of
nonpharmaceutical interventions (NPIs) to mitigate the spread of severe acute respiratory …

Background With the unprecedented morbidity and mortality associated with the COVID-19
pandemic, a vaccine against COVID-19 is urgently needed. We investigated CoronaVac …

Despite numerous journalistic accounts, systematic quantitative evidence on economic
conditions during the ongoing COVID-19 pandemic remains scarce for most low-and middle …

The emergence of SARS-CoV-2 and attempts to limit its spread have resulted in a
contraction of the global economy. Here we document the socioeconomic impacts of the …

Burnout among healthcare personnel has been exacerbated by the COVID-19 pandemic's
unique features. During the COVID-19 pandemic, this systematic review and meta-analysis …

While severe social-distancing measures have proven effective in slowing the coronavirus
disease 2019 (COVID-19) pandemic, second-wave scenarios are likely to emerge as …