Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Older biological age is associated with adverse COVID-19 outcomes: A cohort study in UK Biobank
REACT-2 Round 5: increasing prevalence of SARS-CoV-2 antibodies demonstrate impact of the second wave and of vaccine roll-out in England
Impact of training modules on physicians perspective of COVID-19: An online survey
Decreased hospital visits and increased mortality rate in the emergency department during the COVID-19 pandemic: Evidence from Albania.
Racism as a Leading Cause of Death: Measuring Excess Deaths in the US
High-resolution epigenome analysis in nasal samples derived from children with respiratory viral infections reveals striking changes upon SARS-CoV-2 infection
Assessment of the similarities and differences of the COVID-19 second surges in Europe and the Northeast United States
Street images classification according to COVID-19 risk in Lima, Peru: A convolutional neural networks analysis
Temporal Trends in COVID-19 associated AKI from March to December 2020 in New York City
Identifying hidden Zika hotspots in Pernambuco, Brazil: A Spatial Analysis
The locus coeruleus shows a spatial pattern of structural disintegration in Parkinson's disease.
Delta/ Omicron and Omicron/BA.2 co-infections occurring in Immunocompromised hosts
Association between COVID-19 Outcomes and Mask Mandates, Adherence, and Attitudes
Spatio-temporal detection for dengue outbreaks in the Central Region of Malaysia using climatic drivers at mesoscale and synoptic scale
Cross-sectional assessment of predictors for COVID-19 vaccine uptake: an online survey in Greece
Bladder Cancer Immunotherapy by BCG is associated with a significantly reduced risk of Alzheimer disease
First clinical experience with a novel optical-ultrasound imaging device on various skin pathologies
Phenotyping of acute and persistent COVID-19 features in the outpatient setting: exploratory analysis of an international cross-sectional online survey
Adjunctive Ketamine for Sedation in Critically Ill Mechanically Ventilated Patients: An Active-Controlled, Pilot, Feasibility Clinical Trial
Clinical experience with paliperidone palmitate in a specialty hospital in the Philippines: A short report
Sex-specific epidemiological and clinical characteristics of Covid-19 patients in the southeast region of Bangladesh
Machine Learning Based Prediction of COVID-19 Mortality Suggests Repositioning of Anticancer Drug for Treating Severe Cases
Matrix metalloproteinase 2 and 9 enzymatic activities are selectively increased in the myocardium of Chronic Chagas Disease cardiomyopathy patients: role of TIMPs
Deuterium metabolic imaging and hyperpolarized 13C-MRI of the normal human brain at clinical field strength reveals differential cerebral metabolism
Prognosis of Acute Ischaemic Stroke in Cancer Patients: A National Inpatient Sample Study
Unwelcome memento mori or best clinical practice? Community end-of-life anticipatory medication prescribing practice: a mixed methods observational study