Understanding the implications of SARS-CoV-2 re-infections on immune response milieu, laboratory tests and control measures against COVID-19

SARS-CoV-2 antibody testing for estimating COVID-19 prevalence in the population

Medium-term effects of SARS-CoV-2 infection on multiple vital organs, exercise capacity, cognition, quality of life and mental health, post-hospital discharge

Prevalence and risk factors for delirium in critically ill patients with COVID-19 (COVID-D): a multicentre cohort study

Incidence and Secondary Transmission of SARS-CoV-2 Infections in Schools

6-month consequences of COVID-19 in patients discharged from hospital: a cohort study

Characterisation of the first 250 000 hospital admissions for COVID-19 in Brazil: a retrospective analysis of nationwide data

Comparison of Saliva and Nasopharyngeal Swab Nucleic Acid Amplification Testing for Detection of SARS-CoV-2 A Systematic Review and Meta-analysis

Open Schools, COVID-19, and Child and Teacher Morbidity in Sweden

Durability of Responses after SARS-CoV-2 mRNA-1273 Vaccination

Interim Results of a Phase 1–2a Trial of Ad26.COV2.S COVID-19 Vaccine

Efficacy and Safety of the mRNA-1273 SARS-CoV-2 Vaccine

Early High-Titer Plasma Therapy to Prevent Severe COVID-19 in Older Adults

Convalescent Plasma Antibody Levels and the Risk of Death from COVID-19

Mask-wearing and control of SARS-CoV-2 transmission in the USA: a cross-sectional study