Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Symptoms and SARS-CoV-2 positivity in the general population in the UK
Year-long COVID-19 infection reveals within-host evolution of SARS-CoV-2 in a patient with B cell depletion
Vaccination and herd immunity thresholds in heterogeneous populations
Traumatic Experience and Self-Control in Old Age
HPV vaccination of girls in the German model region Saarland: Insurance data-based analysis and identification of starting points for improving vaccination rates
You aren't what you eat, you become what you eat
Fine mapping of the HLA locus in Parkinson's disease in Europeans
Aerosol tracer testing in the cabin of wide-bodied Boeing 767 and 777 aircraft to simulate exposure potential of infectious particulate such as SARS-CoV-2
Grey and white matter micro-structure is associated with polygenic risk for schizophrenia
Ethnic differences in COVID-19 mortality during the first two waves of the Coronavirus Pandemic: a nationwide cohort study of 29 million adults in England
Multi-ancestry genome-wide analysis identifies effector genes and druggable pathways for coronary artery calcification
Understanding the evidence for climate concerns, negative emotions and climate-related mental ill-health in young people: a scoping review
The incremental value of computed tomography of COVID-19 pneumonia in predicting ICU admission
A preliminary study of commercially available general-purpose chest radiography artificial intelligence-based software for detecting airspace opacity lesions in COVID-19 patients
Responsivity of the striatal dopamine system to methylphenidate - a within-subject I-123-β-CIT-SPECT study in children and adolescents with Attention-Deficit/Hyperactivity Disorder
Aerosol measurement identifies SARS-CoV 2 PCR positive adults compared with healthy controls
Comparing People-Like-Me and linear mixed model predictions of functional recovery following knee arthroplasty
Brain Networks Associated With COVID-19 Risk: Data From 3,662 Participants
A Reproducible Protocol to Assess Arrhythmia Vulnerability in Silico: Pacing at the End of the Effective Refractory Period
Natural Progression of Routine Laboratory Markers following Spinal Trauma: A Longitudinal, Multi-Cohort Study
Distinct effects of single plant-based vs. animal-based meals on satiety and mood revealed by real-world smartphone-embedded studies
COVID-19 Vaccination Strategies Considering Hesitancy Using Particle-Based Epidemic Simulation
Prevalence and associated factors with mental health outcomes among interns and residents physicians during COVID-19 epidemic in Panama: a cross-sectional study
Potential Association of Mitochondrial Haplogroups and A8860G Mutation with Breast Cancer Risk
When Diagnosis Is Made By Playing Shuffled Cards: A Non-Invasive, Real-Time, Adaptive Method to Functionally Evaluate Coronary Artery Based on Coronary Angiography
Secondary transmission of SARS-CoV-2 in educational settings in Northern Italy from September 2020 to April 2021: a population-based study