Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Clinical presentation and in-hospital outcomes of older patients hospitalized with COVID-19 in Montreal, Canada: a retrospective review
Intrinsic Capacity of Rural Elderly in Thar Desert using WHO ICOPE (Integrated Care for Older Persons) Screening Tool: A Pilot Study
Poliovirus Vaccination Induces a Humoral Immune Response that Cross Reacts with SARS-CoV-2
COVID-19 is associated with multiple sclerosis exacerbations that are prevented by disease modifying therapies
Durability of antibody responses and frequency of clinical and subclinical SARS-CoV-2 infection six months after BNT162b2 COVID-19 vaccination in healthcare workers
Research output is low, but increasing, and focuses on public health at new universities in southern Ethiopia
Moment-to-moment brain signal variability reliably predicts psychiatric treatment outcome
The antibody landscapes against Group 1 and 2 influenza virus hemagglutinin following AS03 and MF59 adjuvanted H5N1 vaccination
Nested pool testing strategy for the reliable identification of individuals infected with SARS-CoV-2
Transmission of SARS-CoV-2 by children attending school. Interim report on an observational, longitudinal sampling study of infected children, contacts, and the environment
Race-ethnicity and Perceptional Determinants of COVID-19 Vaccination Intentions: A Cross-sectional Study Among Health Workers and the General Population in the San Francisco Bay Area
Metabolomic and lipidomic signatures in autosomal dominant and late-onset Alzheimer disease brains
Costs and predictors of early readmissions in patients with Infective Endocarditis. Utilizing the Nationwide Readmission Database.
Strain-stream model of epidemic spread in application to COVID-19
Safety of Continuous Erector Spinae Catheters in Chest Trauma: A Retrospective Cohort Study.
Preliminary report on the development of a colorimetric loop-mediated isothermal amplification diagnostic assay for deer tick virus
Genetic overlap between idiopathic pulmonary fibrosis and COVID-19
COVID-19 mRNA Vaccination in Lactation: Assessment of adverse events and vaccine related antibodies in mother-infant dyads
Deficient hand washing facilities in public toilets in the time of the COVID-19 pandemic: A survey in one high-income country
Relative burdens of the COVID-19, malaria, tuberculosis and HIV/AIDS epidemics in sub-Saharan Africa
Triangulating Causality Between Childhood Obesity and Neurobehavior: Twin and Longitudinal Evidence
OLFACTORY TRAINING EFFICIENCY IN POST-COVID-19 PERSISTENT OLFACTORY DISORDERS
The real-life impact of vaccination on COVID-19 mortality in Europe and Israel
Reducing the Cost of Rapid Antigen Tests through Swab Pooling and Extraction in a Device
Whole-genome sequencing of SARS-COV-2 reveals a substantially lower frequency of the UK variant than previously announced in Libya
Metabolic markers distinguish COVID-19 from other intensive care patients and show potential to stratify for disease risk