Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Within-host evolution of SARS-CoV-2 in an immunosuppressed COVID-19 patient: a source of immune escape variants
Covid-19 infection and attributable mortality in UK Long Term Care Facilities: Cohort study using active surveillance and electronic records (March-June 2020)
Assessment of prescribing in under-five pediatric outpatients in Nigeria: an application of the POPI (Pediatrics: Omission of Prescription and Inappropriate Prescription ) tool
NHS CHECK: protocol for a cohort study investigating the psychosocial impact of the COVID-19 pandemic on healthcare workers
Increased hazard of death in community-tested cases of SARS-CoV-2 Variant of Concern 202012/01
Shared genetic etiology between cortical brain morphology and tobacco, alcohol, and cannabis use
A Phase 2 open-label study to determine the safety and efficacy of weekly dosing of ATL1102 in patients with non-ambulatory Duchenne muscular dystrophy
Using deep learning to predict age from liver and pancreas magnetic resonance images allows the identification of genetic and non-genetic factors associated with abdominal aging
Monitoring and forecasting the COVID-19 epidemic in Moscow: model selection by balanced identification technology - version: September 2021
What if risk factors influenced the variability of health outcomes as well as the mean? Evidence and implications
Stress and Depression in the Workplace of Educators in the Philippines
Excess morbidity and mortality among survivors of childhood acute lymphoblastic leukaemia: 25 years of follow-up from the United Kingdom Childhood Cancer Study (UKCCS)
Physical activity, sedentary behaviour, and sleep on Twitter: A labelled dataset for public health research
Structural connectivity of subthalamic nucleus stimulation for improving freezing of gait
Vaccines provide disproportional protection to the increased hospitalisation risk posed by the Delta variant of SARS-CoV2: a meta-analysis
Deprivation and Early Involuntary Retirement: Area-Level Analysis across English Local Authorities
Aggregative trans-eQTL analysis detects trait-specific target gene sets in whole blood
Adverse childhood experiences and resilience among adult women: a population-based study
An investigation into the wellbeing of optometry students.
Inequalities in healthcare disruptions during the Covid-19 pandemic: Evidence from 12 UK population-based longitudinal studies
Causal Impacts of Teaching Modality on U.S. COVID-19 Spread in Fall 2020 Semester
Genetic analyses of common infections in the Avon Longitudinal Study of Parents and Children cohort
A comparative analysis of depression between pregnant and non-pregnant adolescents in a southwestern town in Nigeria
Sharing positive changes made during COVID-19 national lockdown: a multi-method co-production study
Insights from complex trait fine-mapping across diverse populations
Immunogenicity and reactogenicity of booster vaccinations after Ad26.COV2.S priming