Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Is vitamin D deficiency associated with the COVID-19 epidemic in Europe?
Effects of Diet on the Microbiome and Serum Metabolome of South Asian Infants at 1 Year
Assessment and Modeling of COVID-19 Outcomes in a Longitudinal Cohort of Hospitalized Adults
Clinical validation of Whole Genome Sequencing for cancer diagnostics
Immunological Insights Into the Therapeutic Roles of CD24Fc Against Severe COVID-19
Signature transcriptome analysis of stage specific atherosclerotic plaques of patients
Pre-pandemic cognitive function and COVID-19 mortality: prospective cohort study
SARS-CoV-2 B.1.1.7 escape from mRNA vaccine-elicited neutralizing antibodies
Face masks to prevent transmission of respiratory diseases: Systematic review and meta-analysis of randomized controlled trials
Mucosal immunity against SARS-CoV-2 variants of concern including Omicron following vaccination
Novel Application of a Multistate Model to Evaluate the Opioid Use Disorder Care Cascade: A Retrospective Cohort Study
Surveillance of COVID-19 vaccination in US nursing homes, December 2020-April 2021
Using Satellite Images and Deep Learning to Identify Associations Between County-Level Mortality and Residential Neighborhood Features Proximal to Schools: A Cross-Sectional Study
Cardiac Damage Risk in Radiotherapy of Esophageal Cancer: The Importance of Baseline Cardiac Risk Profile
My family sold a cow to pay for my Traditional doctor and now there's no money to travel to the HIV clinic: barriers to antiretroviral adherence among rural-Indigenous peoples living with HIV in the Comarca Ngabe-Bugle, Panama
Multicenter international assessment of a SARS-CoV-2 RT-LAMP test for point of care clinical application
Effects of racial/ethnic disparities in healthcare utilization on antibiotic use, 2016/2018
Memory and Concentration Skills In A Sample of First Grade Medical Students at University of Baghdad/College of Medicine
Inequities in COVID-19 vaccine and booster coverage across Massachusetts ZIP codes: large gaps persist after the 2021/22 Omicron wave
Protocol for a nationwide Internet-based health survey in workers during the COVID-19 pandemic in 2020
MRI Intensity Standardization Evaluation Design for Head and Neck Quantitative Imaging Applications
Defining the Critical Components of Informed Consent for Genetic Testing: A Delphi Study
Impact of COVID-19 Pandemic on Utilization of Facility-Based Essential Maternal and Child Health Services in North Shewa Zone, Ethiopia
Proteomic and metabolomic signatures associated with the immune response in healthy individuals immunized with an inactivated SARS-CoV-2 vaccine
Extreme COVID-19 waves reveal hyperexponential growth and finite-time singularity
A pan-European study of SARS-CoV-2 variants in wastewater under the EU Sewage Sentinel System