Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Effectiveness of BNT162b2 and mRNA-1273 COVID-19 vaccines against symptomatic SARS-CoV-2 infection and severe COVID-19 outcomes in Ontario, Canada
The causal effect of serum vitamin D concentration on COVID-19 susceptibility, severity and hospitalization traits: a Mendelian randomization study
Increased Prevalence of Rare Copy Number Variants in Treatment-Resistant Psychosis
Genetic variants link lower segregation of brain networks to higher blood pressure and worse cognition within the general aging population
Transdiagnostic digital phenotyping of psychopathology in a help-seeking population (PhenoNetz) - a study protocol for an experience sampling study
Development and validation of a neuroimaging biomarker for electroconvulsive therapy outcome in depression: a multicenter machine learning analysis
The main factors influencing COVID-19 spread and deaths in Mexico: A comparison between Phases I and II
Efferocytosis of SARS-CoV-2-infected dying cells impairs macrophage anti-inflammatory programming and continual clearance of apoptotic cells
Precise Language Responses Challenge Easy Rating Scales - Comparing Clinicians and Respondents Views
A Voice App Design for Heart Failure Self-Management: A Pilot Study
Taiwan on track to end third COVID-19 community outbreak
Effectiveness and Safety of Niclosamaide as Add-on Therapy to the Standard of Care Measures in COVID-19 Management: Randomized controlled clinical trial
Global Monitoring of the Impact of COVID-19 Pandemic through Online Surveys Sampled from the Facebook User Base
Methadone overdoses increased 48% during the COVID-19 epidemic
High-throughput Mutational Surveillance of the SARS-CoV-2 Spike Gene
South to North Migration Patterns of Tuberculosis Patients Diagnosed in the Mexican Border with Texas
Processing of slow-global auditory regularities causes larger neural responses to heartbeats in patients under minimal consciousness state, compared to unresponsive wakefulness syndrome
Protection of COVID-19 vaccination and previous infection against Omicron BA.1 and Delta SARS-CoV-2 infections, the Netherlands, 22 November 2021- 19 January 2022
Cellular and humoral immune response to a third dose of BNT162b2 COVID-19 vaccine - a prospective observational study
Reproduction as a Means of Evaluating Policy Models: A Case Study of a COVID-19 Simulation
Emergence of SARS-CoV-2 variants of concern in the pediatric population of the United States
A preliminary study of commercially available general-purpose chest radiography artificial intelligence-based software for detecting airspace opacity lesions in COVID-19 patients
The evolutionary landscape of SARS-CoV-2 variant B.1.1.519 and its clinical impact in Mexico City
Genetic constraint at single amino acid resolution improves missense variant prioritisation and gene discovery
A Systematic Review: The Dimensions and Indicators utilized in the Performance Evaluation of Health Care Organizations- An Implication during COVID-19 Pandemic
Design and proof-of-concept evaluation of a touchless connector system for preventing peritoneal dialysis-associated peritonitis.