Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Severity of Illness Caused by Severe Acute Respiratory Syndrome Coronavirus 2 Variants of Concern in Children: A Single-Center Retrospective Cohort Study
Impact of SARS-CoV-2 B.1.1.7 Spike variant on neutralisation potency of sera from individuals vaccinated with Pfizer vaccine BNT162b2
Trends in National Opioid Prescribing for Dental Procedures among Medicaid Patients
MRI connectivity-based spread of microglial activation in early Alzheimer's disease
Estimating local outbreak risks and the effects of non-pharmaceutical interventions in age-structured populations: SARS-CoV-2 as a case study
To what extent do we need to rely on non-pharmaceutical interventions while COVID-19 vaccines roll out in 2021?
Pre-pandemic mental health and disruptions to healthcare, economic, and housing outcomes during COVID-19: evidence from 12 UK longitudinal studies
Deep clinical phenotyping of Alzheimer's Disease Patients Leveraging Electronic Medical Records Data Identifies Sex-Specific Clinical Associations
An allele-specific primer extension assay to quantify the proportion of B.1.1.7-specific SARS-CoV-2 RNA in wastewater
The COVID-19 pandemic and temporal change in metabolic risk factors for cardiovascular disease: a natural experiment within the HELIUS study.
Conditionality of COVID-19 vaccine acceptance in European countries
Dietary practices, physical activity and social determinants of non-communicable diseases in Nepal: a systemic analysis
Pre-Diagnostic Cognitive and Functional Impairment in Multiple Sporadic Neurodegenerative Diseases
Ownership and COVID-19 in care homes for older people: A living systematic review of outbreaks, infections, and mortalities
A unique dexamethasone-dependent gene expression profile in the lungs of COVID-19 patients
Are allergic diseases a risk factor for systemic side effects after COVID-19 vaccines?
Plasma biomarkers of Alzheimer's disease predict cognitive decline and could improve clinical trials in the cognitively unimpaired elderly
The French Early Breast Cancer Cohort (FRESH): a resource for breast cancer research and evaluations of oncology practices based on the French National Healthcare System Database (SNDS)
Intrahost evolution of the HIV-2 capsid correlates with progression to AIDS
Cross-Sectional Study of University students attitudes to on campus delivery of COVID-19 vaccines and future-proofing MenACWY and MMR vaccination rates by adopting COVID-19 vaccine roll-out strategies
Infection Units: A novel approach to the modeling of COVID-19 spread
FastMix: A Versatile Multi-Omics Data Integration Pipeline for Cell Type-Specific Biomarker Inference
The mortality risk factor of severe community-acquired pneumonia (SCAP) patients with Sepsis: a retrospective study
Identifying Medication-related Intents from a Bidirectional Text Messaging Platform for Hypertension Management: An Unsupervised Learning Approach
Heading for personalized rTMS in tinnitus: reliability of individualized stimulation protocols in behavioral and electrophysiological responses
The health effects in the US of quarantine policies based on predicted individual risk of severe COVID-19 outcomes