Importance COVID-19 is associated with clinically significant symptoms despite resolution of
the acute infection (ie, post-COVID-19 syndrome). Fatigue and cognitive impairment are …

Abstract Coronavirus disease 2019 (COVID-19) is caused by the severe acute respiratory
syndrome coronavirus 2 (SARS-CoV-2). Despite pulmonary impairments being the most …

Objectives COVID-19 has been arguably the most important public health concern
worldwide in 2020, and efforts are now escalating to suppress or eliminate its spread. In this …

Vaccines, when available, will likely become our best tool to control the COVID-19
pandemic. Even in the most optimistic scenarios, vaccine shortages will likely occur. Using …

Objective To estimate the infection fatality rate of coronavirus disease 2019 (COVID-19) from
seroprevalence data. Methods I searched PubMed and preprint servers for COVID-19 …

INTRODUCTION After initial declines, in mid-2020, a sustained resurgence in the
transmission of novel coronavirus disease (COVID-19) occurred in the United States …

Background There is limited information on the effect of age on the transmission of SARS-
CoV-2 infection in different settings. Methods We reviewed published studies/data on …

Importance Case-based surveillance of severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) infection likely underestimates the true prevalence of infections. Large-scale …

Background Timely, accurate, and comprehensive estimates of SARS-CoV-2 daily infection
rates, cumulative infections, the proportion of the population that has been infected at least …

Background Wuhan was the epicentre of the COVID-19 outbreak in China. We aimed to
determine the seroprevalence and kinetics of anti-SARS-CoV-2 antibodies at population …