Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Background rates of all-cause mortality, hospitalizations, and emergency department visits among nursing home residents in Ontario, Canada to inform COVID-19 vaccine safety assessments
Pandemic excess mortality in Spain, Sweden, and Switzerland during the COVID-19 pandemic in 2020 was at its highest since 1918
Trend and Weightage of Problem-based Questions in Undergraduate Pharmacology Written Question Papers of Bangladesh
Identification and Analysis of Novel Synovial Tissue-based Biomarkers and Interacting Pathways for Rheumatoid Arthritis
Vaccine Efficacy at a Point in Time
Influenza outbreak, disease transmission rate and mortality risk in the United States (2021 to 2050 Projection)
The UK experience of stereoelectroencephalography in children: An analysis of factors predicting the identification of a seizure onset zone and subsequent seizure freedom
Associations of the BNT162b2 COVID-19 vaccine effectiveness with patient age and comorbidities
Injuries and fatalities in Colombian mining emergencies (2005 - 2018)
Modeling the early phase of the Belgian COVID-19 epidemic using a stochastic compartmental model and studying its implied future trajectories
Preserved T cell responses to SARS-CoV-2 in anti-CD20 treated multiple sclerosis.
Novel protein-altering variants associated with serum apolipoprotein and lipid levels
Impact of COVID-19 on the indigenous population of Brazil: A geo-epidemiological study
Evaluation of a throat spray with lactobacilli in COVID-19 outpatients in a randomized, double-blind, placebo-controlled trial for symptom and viral load reduction
Heart rate and heart rate variability in patients with chronic inflammatory joint disease: The role of pain duration and the insular cortex
High correlation between binding IgG (anti-RBD/S) and neutralizing antibodies against SARS-CoV-2 six months after vaccination
Pride and adversity among nurses and physicians during the pandemic in two US healthcare systems: a mixed methods analysis
The localized rise of a B.1.526 variant containing an E484K mutation in New York State
Behavioral Effects in Disorders of Consciousness Following Transcranial Direct Current Stimulation: A Systematic Review and Individual Patient Data Meta-analysis of Randomized Clinical Trials
Use of compressed sensing to expedite high-throughput diagnostic testing for COVID-19 and beyond
Infectious SARS-CoV-2 Virus in Symptomatic COVID-19 Outpatients: Host, Disease, and Viral Correlates
Meta-analysis fine-mapping is often miscalibrated at single-variant resolution
Efficacy of high-pressure balloon for the treatment of arteriovenous fistula stenosis: a meta-analysis
An Alzheimer's disease pathway uncovered by functional omics: the risk gene CELF1 regulates KLC1 splice variant E expression, which drives Aβ pathology
National hospital readiness for COVID-19 in Lesotho: Evidence for oxygen ecosystem strengthening
Urinary collagen-derived peptides as sensitive markers for bone resorption and bisphosphonate treatment in kidney transplant patients