Background Our understanding of the global scale of Severe Acute Respiratory Syndrome
Coronavirus 2 (SARS-CoV-2) infection remains incomplete: Routine surveillance data …

SUMMARY The coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute
respiratory disease coronavirus 2 (SARS-CoV-2), has led to millions of confirmed cases and …

Aims To examine the nurses' burnout and associated risk factors during the COVID‐19
pandemic. Design We followed the Cochrane criteria and the Preferred Reporting Items for …

Introduction The infection fatality rate (IFR) of COVID-19 has been carefully measured and
analysed in high-income countries, whereas there has been no systematic analysis of age …

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: Immunoassays for determining past SARS-CoV-2 infection have not been
systematically evaluated in vaccinated persons in comparison with unvaccinated persons …

Introduction Estimating COVID-19 cumulative incidence in Africa remains problematic due to
challenges in contact tracing, routine surveillance systems and laboratory testing capacities …

Background Many studies report the seroprevalence of severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) antibodies. We aimed to synthesize seroprevalence data to …

Background Estimates of community spread and infection fatality rate (IFR) of COVID‐19
have varied across studies. Efforts to synthesize the evidence reach seemingly discrepant …

There is a consensus that mass vaccination against SARS-CoV-2 will ultimately end the
COVID-19 pandemic. However, it is not clear when and which control measures can be …