Instruct: Identify the main category of the given medRxiv paper based on the title.
Query: Examining changes in sleep duration associated with the onset of the COVID-19 pandemic: Who is sleeping and who is not?
Effectiveness of BNT162b2 and mRNA-1273 COVID-19 vaccines against symptomatic SARS-CoV-2 infection and severe COVID-19 outcomes in Ontario, Canada: a test-negative design study
Repeat Subcutaneous Administration of REGEN-COV(R) in Adults is Well-Tolerated and Prevents the Occurrence of COVID-19
Timing of elective tracheotomy and duration of mechanical ventilation amongst patients admitted to intensive care with severe COVID-19: a multicentre prospective cohort study
Can individuals with low antibody responses to conventional antiviral vaccines acquire adequate antibody by the SARS-CoV-2 mRNA vaccine?
Spatial Growth Rate of Emerging SARS-CoV-2 Lineages in England, September 2020-December 2021
PERIPHERAL INOTROPES IN CRITICALLY ILL CHILDREN - IS IT SAFE?
A Systems Biology Workflow to Support the Diagnosis of Pyrimidine and Urea Cycle Disorders
A unique SARS-CoV-2 spike protein P681H strain detected in Israel
Efficacy of Probucol on cognitive function in Alzheimers disease: Study protocol for a double-blind, placebo-controlled, randomised phase II trial (PIA Study)
Predicting the Effectiveness of the Pfizer-BioNTech BNT162b2 Vaccine from SARS-CoV-2 Variants Neutralisation Data
REACT-1 round 8 final report: high average prevalence with regional heterogeneity of trends in SARS-CoV-2 infection in the community in England during January 2021
Can 10x cheaper, lower-efficiency particulate air filters and box fans complement High-Efficiency Particulate Air (HEPA) purifiers to help control the COVID-19 pandemic?
Reduction in postoperative opioid requirement associated with use of the NSS-2(R) Bridge device, a disposable auriculo-nerve field stimulator, and factors affecting the response in cancer patients undergoing abdominal surgical procedures
Metabolic associations with stroke, dementia, and imaging markers of cerebral small vessel disease: a comprehensive metabolomics study
Evaluating the effects of re-opening plans on dynamics of COVID-19 in SP
Yellow fever disease severity is driven by an acute cytokine storm modulated by an interplay between the human gut microbiome and the metabolome
Adaptive vaccination may be needed to extirpate COVID-19: Results from a runtime-alterable strain-drift and waning-immunity model
Air pollution exposure and mitochondrial DNA copy number in the UK Biobank
Mapping social distancing measures to the reproduction number for COVID-19
Cerebello-thalamic activity drives an abnormal motor network into dystonic tremor
The Benefits and Harms of Open Notes in Mental Health: A Delphi Survey of International Experts
Comparing the genetic and environmental architecture of blood count, blood biochemistry and urine biochemistry biological ages with machine learning
metaCOVID: An R-Shiny application for living meta-analyses of COVID-19 trials
An update on statistical modeling for quality risk assessment of clinical trials
Using a household structured branching process to analyse contact tracing in the SARS-CoV-2 pandemic