Instruct: Identify the main category of Medrxiv papers based on their titles.
Query: Convergence of Comorbidity and COVID-19 Infection to Fatality: An Investigation Based on Concurrent Health Status Evaluation among Older Adults
Mothers' hygiene experiences in confinement centres: a cohort study
The role of childrens vaccination for COVID-19 - Pareto-optimal allocations of vaccines
Reduced locus coeruleus integrity linked to response inhibition deficits in parkinsonian disorders
Passively Sensing SARS-CoV-2 RNA in Public Transit Buses
Rivaroxaban is Comparable to Warfarin in Prevention of Thromboembolism in Patients with Non-Valvular Atrial Fibrillation with Valvular Heart Disease: A Systematic Review and Meta-analysis
Emergence of the Delta Variant and risk of SARS-CoV-2 infection in secondary school students and staff: prospective surveillance in 18 schools, England
Online prescribing for sexually transmitted infections 	- what is on offer? An evaluation of internet pharmacies based in the United Kingdom
Exploring the experiences of loneliness in adults with mental health problems: a participatory qualitative interview study
How closely is COVID-19 related to HCoV, SARS, and MERS? : Clinical comparison of coronavirus infections and identification of risk factors influencing the COVID-19 severity using common data model (CDM)
Emergence of the E484K Mutation in SARS-CoV-2 Lineage B.1.1.220 in Upstate New York
Experiences of staff providing specialist palliative care during COVID-19: A multiple qualitative case study.
Detection of prevalent SARS-CoV-2 variant lineages in wastewater and clinical sequences from cities in Quebec, Canada
Evaluation of the Liberty16 mobile real time PCR device for use with the SalivaDirect assay for SARS-CoV-2 testing
Building a Best-in-Class De-identification Tool for Electronic Medical Records Through Ensemble Learning
A clustering of missense variants in the crucial chromatin modifier WDR5 defines a new neurodevelopmental disorder
COGNITIVE ADVERSE EFFECTS OF LACOSAMIDE IN PATIENTS WITH LOCALIZATION RELATED EPILEPSY - A PROSPECTIVE OBSERVATIONAL STUDY
Estimating data-driven COVID-19 mitigation strategies for safe university reopening
Dermatophytic Diseases: A Review of Tinea Pedis
Psychological Distress Before and During the COVID-19 Pandemic Among Adults in the United Kingdom: Coordinated Analyses of 11 Longitudinal Studies
Estimating Time-Dependent Disease Transmission Intensity using Reported Data: An Application to Ebola and Selected Public Health Problems
Serum extracellular vesicles trace COVID-19 progression and immune responses
The reactogenicity and immunogenicity of a booster dose after the second dose of a protein subunit vaccine MVC-COV1901.
Impact of Covid-19 social distancing measures on future incidence of invasive pneumococcal disease in England and Wales - a mathematical modelling study
Increased SAR-CoV-2 shedding associated with reduced disease severity despite continually emerging genetic variants
RNA expression classifiers from a model of breast epithelial cell organization to predict pathological complete response in triple negative breast cancer