Instruct: Identify the main category of a Medrxiv paper based on its title.
Query: Face masks, old age, and obesity explain country's COVID-19 death rates
Short report: Ethnicity and COVID-19 death in the early part of the COVID-19 second wave in England: an analysis of OpenSAFELY data from 1st September to 9th November 2020
Single-Molecule Detection of SARS-CoV-2 by Plasmonic Sensing of Isothermally Amplified Nucleic Acids
Excess mortality analysis for Germany for all three COVID-19 waves in 2020 - 2021
Attitudes Towards Digital Health Technology: Introducing the Digital Health Scale
Ultra Deep Sequencing Reveals the Mutational Landscape of Classical Hodgkin Lymphoma
6-Month Follow Up of 8679 Hospitalized COVID-19 Patients in Germany: A Nationwide Cohort Study
MRI based Kidney Radiomics analysis during chronic lithium treatment: validation of a texture index associated with decreased kidney function.
Effectiveness of 13-valent pneumococcal conjugate vaccine against medically-attended lower respiratory tract infection and pneumonia among older adults
Evaluating the effects of second-dose vaccine-delay policies in European countries: A simulation study based on data from Greece
Genome-wide Analysis Identifies Novel Gallstone-susceptibility Loci Including Genes Regulating Gastrointestinal Motility
An outbreak of SARS-CoV-2 in a public-facing office in England, 2021
Impact of non-pharmacological interventions on COVID-19 boosting vaccine prioritization and vaccine-induced herd immunity: a population-stratified modelling study
Bone morphogenetic protein 2 is a new molecular target linked to nonalcoholic fatty liver disease with potential value as non-invasive screening tool.
White Matter Abnormalities in Body Integrity Dysphoria
Possible future waves of SARS-CoV-2 infection generated by variants of concern with a range of characteristics
Risk assessment for airborne disease transmission by poly-pathogen aerosols
History of suicide attempts and COVID-19 infection in Veterans with schizophrenia or schizoaffective disorder: effect modification by age and obesity
Body mass index and subfertility: multivariable regression and Mendelian randomization analyses in the Norwegian Mother, Father and Child Cohort Study
Combined Metabolic Activators Improve Cognitive Functions without Altering Motor Scores in Parkinson's Disease
CHARACTERIZING AND MANAGING AN EPIDEMIC: A FIRST PRINCIPLES MODEL AND A CLOSED FORM SOLUTION TO THE KERMACK AND MCKENDRICK EQUATIONS
Frailty is a predictor of medication-related harm requiring healthcare utilisation: a multicentre prospective cohort study
Healthcare workers' mental health and wellbeing during the COVID-19 pandemic: Longitudinal analysis of interview and social media data
Massive social protests amid the pandemic in selected  Colombian  cities:  Did  they increase COVID-19 cases?
Detailed patient-individual reporting of lymph node involvement in oropharyngeal squamous cell carcinoma with an online interface
Temporal trends in legionellosis national notification data and the effect of COVID-19, Switzerland, 2000- 2020