Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Testing Denmark: A Danish nationwide surveillance study of COVID-19
Explaining ethnicity disparities in COVID-19 mortality: population-based, prospective cohort study
Longitudinal serology in SARS-CoV-2 infected individuals in India - a prospective cohort study
Immune memory in mild COVID-19 patients and unexposed donors from India reveals persistent T cell responses after SARS-CoV-2 infection
A Discernable Increase in the Severe Acute Respiratory Syndrome Coronavirus 2 R.1 Lineage Carrying an E484K Spike Protein Mutation in Japan
Fluency changes due to sports-related concussion
Detection of Mutations Associated with Variants of Concern Via High Throughput Sequencing of SARS-CoV-2 Isolated from NYC Wastewater
Public awareness and support for use of wastewater for SARS-CoV-2 monitoring: A community survey in Louisville, Kentucky
An ML prediction model based on clinical parameters and automated CT scan features for COVID-19 patients
All-cause mortality during SARS-CoV-2 Pandemic in India: Nationally-representative estimates independent of official death registry
Identifying SARS-CoV-2 Variants of Concern through saliva-based RT-qPCR by targeting recurrent mutation sites
A Cross-Sectional Analysis of Oral Health Spending Over the Lifespan in Commercial and Medicaid Insured Populations
The application of Raman spectroscopy and chemometric methods for analysis healthy blood and blood with BRCA mutation
Excess Mortality by Suicide associated with COVID-19 in Japan through August, 2021
Multicenter cohort study of children hospitalized with SARS-CoV-2 infection
The treatment of scaphoid non-unions with partial and total scaphoid in titanium custom-made 3D-printed prostheses and reconstruction of scapholunate interosseous ligament: a preliminary study
Resolutive results with oral corticosteroids for patients with COVID-19 in pulmonary inflammatory phase. Successful outpatient experience during the collapse of Belem do Para Health System - Brazil.
Ketamine for the multivariate effect of PTSD: Systematic review and meta-analysis
A genome-wide association study for nonalcoholic fatty liver disease identifies novel genetic loci and trait-relevant candidate genes in the Million Veteran Program.
The mystery of COVID-19 reinfections: A global systematic review and meta-analysis of 577 cases
Serum Oxidative Stress Markers in Women with Uterine Fibroids in Lagos, Nigeria.
Association of the Transthyretin Variant V122I With Polyneuropathy Among Individuals of African Descent
Quantifying the Utility of Low Resolution Brain Imaging:: Treatment of Infant Hydrocephalus
Combination of blood biomarkers and stroke scales improves identification of large vessel occlusions
Early Vocal Development in Tuberous Sclerosis Complex
Durability of Omicron-neutralizing serum activity following mRNA booster immunization in elderly individuals